Parameters

The Chevrolet Impala has 199 parameters.

● Confirmed◆ In testing○ Supported× Not supported

Battery

Control module voltage `VPWR`SAE J1979Confirmed

Power input to the OBD control module. VPWR is normally battery voltage, less any voltage drop in the circuit between the battery and the control module.

Pelican can show this parameter as the starter battery voltage.

Service 01PID 42
Module7E0 → 7E8
Every10 s

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{1000}$
Range: 0 to 65.535 V
Unit: V

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2017. Supported for 1996, 2018.

Ignition 1 voltage `IMPALA_IGN_1_V`

Pelican can show this parameter as the starter battery voltage.

Service 22DID 1141
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{10}$
Range: 0 to 25.5 V
Unit: V

In testing for 1996, 2000 to 2020.

M control module voltage `IMPALA_M_CTRL_MODULE_V`

Service 22DID 0042
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{1000}$
Range: 0 to 65.53 V
Unit: V

In testing for 1996, 2000 to 2020.

Climate

Ambient air temperature `AAT`SAE J1979Confirmed

Service 01PID 46
Module7E0 → 7E8
Every15 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

Confirmed for 2007, 2011, 2013 to 2014, 2017, 2019.

Clocks

Time since engine start `IMPALA_RUNTM`Confirmed

Service 22DID 11A1
Module7E0
Every1 s
Testing for 1996, 2000 to 2006, 2008 to 2010, 2012, 2015

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535 s
Unit: s

0x0032 = 50 → 50 s

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2020. In testing for 2000 to 2002, 2004 to 2006, 2008 to 2010, 2012, 2015. Not supported for 1996, 2003.

Time since engine start `RUNTM`SAE J1979Confirmed

Increments while the engine is running. Freezes if the engine stalls. Resets to zero during every control module power-up and when entering the key-on, engine off position. Limited to 65,535 seconds and will not wrap around to zero.

Service 01PID 1F
Module7E0 → 7E8
Every1 s

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535 s
Unit: s

Confirmed for 2014. Supported for 1996, 2007, 2011, 2013, 2016 to 2020.

Control

Absolute throttle position `TP`SAE J1979Confirmed

Throttle position at idle will usually be more than 0%, and throttle position at wide open throttle will usually be less than 100%.

Pelican can show this parameter as the throttle position.

Service 01PID 11
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2007, 2011, 2013, 2017. Supported for 1996, 2014, 2016, 2018 to 2020.

Absolute throttle position B `TP_B`SAE J1979Confirmed

Pelican can show this parameter as the throttle position.

Service 01PID 47
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2007, 2011, 2013, 2019.

Brake pedal position circuit signal `IMPALA_BRAKE_PEDAL_POS`

Service 22DID 1124
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Relative throttle position `TP_R`SAE J1979Confirmed

Relative or 'learned' throttle position.

Service 01PID 45
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2011.

Pedals

Accelerator pedal position D `APP_D`SAE J1979Confirmed

Service 01PID 49
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2013. Supported for 2011.

Accelerator pedal position E `APP_E`SAE J1979Confirmed

Service 01PID 4A
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2013. Supported for 2011.

Doors

Hood position `IMPALA_HOOD_POS`

Service 22DID 905C
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Hood switch `IMPALA_HOOD_SWITCH`

Service 22DID 247A
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{51}$
Range: 0 to 5 V
Unit: V

In testing for 1996, 2000 to 2020.

DTCs

Distance traveled since diagnostic trouble codes cleared `CLR_DIST`SAE J1979Confirmed

Distance accumulated since DTCs were cleared (via an external test equipment or possibly, a battery disconnect). This parameter is not associated with any particular DTC. It is simply an indication for inspection/maintenance, of the last time an external test equipment was used to clear DTCs. If greater than 65,535 km have occurred, will remain at 65,535 km and not wrap to zero.

Pelican can show this parameter as the distance since trouble codes were cleared.

Service 01PID 31
Module7E0 → 7E8
Every15 s

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535 km
Unit: km

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2019. Supported for 2020.

Distance traveled while MIL was activated `MIL_DIST`SAE J1979Confirmed

Resets to zero when MIL changes from deactivated to activated, if diagnostic information is cleared, or if at least 40 warm-up cycles occur without MIL being activated.

Service 01PID 21
Module7E0 → 7E8
Every5 s

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535 km
Unit: km

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Malfunction indicator lamp `MIL`SAE J1979Confirmed

The MIL status is OFF during key-on, engine-off bulb check unless MIL has also been commanded ON for a detected malfunction. The status reflects whether there are confirmed DTC(s) stored that are illuminating the MIL. It should not reflect the status of the MIL, which could be on for a function check, flashing I/M readiness or flashing for misfire.

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 0 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Off or on

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Number of DTCs stored in this ECU `DTC_CNT`SAE J1979Confirmed

Number of confirmed emission-related DTCs stored in the ECU available for display using Service $03.

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bits 1 to 7 of the reply, 7 bits.

Formula: $val$
Range: 0 to 127
Unit: Number

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Number of warm-ups since diagnostic trouble codes cleared `WARM_UPS`SAE J1979Confirmed

Number of OBD warm-up cycles since all DTCs were cleared (via an external test equipment or possibly, a battery disconnect). A warm-up is defined in the OBD regulations to be sufficient vehicle operation such that coolant temperature rises by at least 22°C (40°F) from engine starting and reaches a minimum temperature of 70°C (160°F) (60°C (140°F) for diesels). This PID is not associated with any particular DTC. It is simply an indication for inspection/maintenance, of the last time an external test equipment was used to clear DTCs. If greater than 255 warm-ups have occurred, this parameter will remain at 255 and not wrap to zero.

Service 01PID 30
Module7E0 → 7E8
Every60 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

Confirmed for 2007, 2013. Supported for 2011, 2014, 2016 to 2020.

Status

A/C system refrigerant monitoring `ACRF_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 19 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

A/C system refrigerant monitoring completed `ACRFCMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 27 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

A/C system refrigerant monitoring ready `ACRF_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 27 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Catalyst monitoring `CAT_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 23 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Catalyst monitoring completed `CAT_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 31 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Catalyst monitoring ready `CAT_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 31 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Comprehensive component monitoring completed `CCM_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 9 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Comprehensive component monitoring ready `CCM_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 9 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

EGR system monitoring `EGR_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 16 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

EGR system monitoring completed `EGR_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 24 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

EGR system monitoring ready `EGR_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 24 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Evaporative system monitoring `EVAP_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 21 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Evaporative system monitoring completed `EVAPCMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 29 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Evaporative system monitoring ready `EVAP_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 29 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Fuel system monitoring completed `FUEL_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 10 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Fuel system monitoring ready `FUEL_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 10 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Heated catalyst monitoring `HCAT_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 22 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Heated catalyst monitoring completed `HCATCMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 30 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Heated catalyst monitoring ready `HCAT_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 30 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Misfire monitoring completed `MIS_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 11 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Misfire monitoring ready `MIS_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 11 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Oxygen sensor heater monitoring `HTR_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 17 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Oxygen sensor heater monitoring completed `HTR_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 25 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Oxygen sensor heater monitoring ready `HTR_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 25 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Oxygen sensor monitoring `O2S_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 18 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Oxygen sensor monitoring completed `O2S_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 26 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Oxygen sensor monitoring ready `O2S_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 26 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Secondary air system monitoring `AIR_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 20 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Secondary air system monitoring completed `AIR_CMPL`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 28 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 2011, 2017.

Secondary air system monitoring ready `AIR_RDY`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 28 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Yes or no

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Support

A/C system refrigerant monitoring supported `ACRF_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 19 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Catalyst monitoring supported `CAT_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 23 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Comprehensive component monitoring enabled `CCM_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 13 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Comprehensive component monitoring supported `CCM_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 13 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Compression ignition monitoring supported `CIM_SUP`SAE J1979Confirmed

Indicates support of spark ignition or compression ignition monitors.

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 12 of the reply.

Unit: Named states

States
Raw value	State	Meaning
`0`	`SPARK`	Spark ignition monitors supported
`1`	`COMPRESSION`	Compression ignition monitors supported

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Compression ignition monitoring supported `CIM_SUP_FLAG`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 12 of the reply.

Unit: Named states

States
Raw value	State	Meaning
`0`	`SPARK`	Spark ignition monitors supported
`1`	`COMPRESSION`	Compression ignition monitors supported

Confirmed for 2007, 2013. Supported for 2011, 2017.

EGR system monitoring supported `EGR_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 16 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Evaporative system monitoring supported `EVAP_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 21 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Fuel system monitoring enabled `FUEL_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 14 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Fuel system monitoring supported `FUEL_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 14 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Heated catalyst monitoring supported `HCAT_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 22 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Misfire monitoring enabled `MIS_ENA`SAE J1979Confirmed

Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 15 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 2011, 2017.

Misfire monitoring supported `MIS_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 15 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Oxygen sensor heater monitoring supported `HTR_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 17 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Oxygen sensor monitoring supported `O2S_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 18 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Secondary air system monitoring supported `AIR_SUP`SAE J1979Confirmed

Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 20 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007, 2013. Supported for 1996, 2011, 2014, 2016 to 2020.

Engine

1-2 shift error `IMPALA_1_2_SHIFT_ERROR`

Service 22DID 1997
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{40}$
Range: 0 to 6.375 s
Unit: s

In testing for 1996, 2000 to 2020.

1-2 shift time `IMPALA_1_2_SHIFT_TIME`

Service 22DID 1993
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{40}$
Range: 0 to 6.375 s
Unit: s

In testing for 1996, 2000 to 2020.

2-3 shift error `IMPALA_2_3_SHIFT_ERROR`

Service 22DID 1998
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{40}$
Range: 0 to 6.375 s
Unit: s

In testing for 1996, 2000 to 2020.

2-3 shift time `IMPALA_2_3_SHIFT_TIME`

Service 22DID 1994
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{40}$
Range: 0 to 6.375 s
Unit: s

In testing for 1996, 2000 to 2020.

3-4 shift error `IMPALA_3_4_SHIFT_ERROR`

Service 22DID 1999
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{40}$
Range: 0 to 6.375 s
Unit: s

In testing for 1996, 2000 to 2020.

3-4 shift time `IMPALA_3_4_SHIFT_TIME`

Service 22DID 1995
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{40}$
Range: 0 to 6.375 s
Unit: s

In testing for 1996, 2000 to 2020.

Absolute load value `LOAD_ABS`SAE J1979Confirmed

Pelican can show this parameter as the absolute engine load.

Service 01PID 43
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 25700 %
Unit: %

Confirmed for 2007, 2011, 2013.

Active grille cold temperature mode `IMPALA_ACTIVE_GRILLE_COLD_T`

Service 22DID 239B
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Active grille shutter position `IMPALA_ACTIVE_GRILLE_SHUTTER_POS`

Service 22DID 2366
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 20}{51}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Active grille shutter position command `IMPALA_ACTIVE_GRILLE`

Service 22DID 2364
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 20}{51}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Air conditioning high side pressure `IMPALA_AC_HIGH_SIDE_P`

Service 22DID 1564
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val \times 2.02$
Range: 0 to 515.1 psi
Unit: psi

In testing for 1996, 2000 to 2020.

Air filter life remaining `IMPALA_AIRFILT_LIFE`

Service 22DID 36A7
Module7E0 → 7E8
Every30 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Air flow rate from mass air flow sensor `MAF`SAE J1979Confirmed

Pelican can show this parameter as the mass air flow.

Service 01PID 10
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{100}$
Range: 0 to 655.35 g/s
Unit: g/s

Confirmed for 2007, 2011, 2013 to 2014, 2017, 2019. Supported for 1996, 2016, 2018, 2020.

Air/fuel ratio, commanded `IMPALA_AIR_FUEL_RAT_CMD`

Service 22DID 119E
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{10}$
Range: 0 to 25.5
Unit: Number

In testing for 1996, 2000 to 2020.

Ambient air temperature 2 `IMPALA_AIR_TEMP_AMBIENT_2`

Service 22DID 232C
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

In testing for 1996, 2000 to 2020.

Axle torque driver requested `IMPALA_AXLE_TQ_DRIVER_REQ`

Service 22DID 2434
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val - 22534$
Range: -22534 to 43001 N·m
Unit: N·m

In testing for 1996, 2000 to 2020.

Balance rate, cylinder 1 `IMPALA_BALANCE_RATE_CYL_1`

Service 22DID 162F
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{64} - 512$
Range: -512 to 511
Unit: Number

In testing for 1996, 2000 to 2020.

Balance rate, cylinder 2 `IMPALA_BALANCE_RATE_CYL_2`

Service 22DID 1630
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{64} - 512$
Range: -512 to 511
Unit: Number

In testing for 1996, 2000 to 2020.

Balance rate, cylinder 3 `IMPALA_BALANCE_RATE_CYL_3`

Service 22DID 1631
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{64} - 512$
Range: -512 to 511
Unit: Number

In testing for 1996, 2000 to 2020.

Balance rate, cylinder 4 `IMPALA_BALANCE_RATE_CYL_4`

Service 22DID 1632
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{64} - 512$
Range: -512 to 511
Unit: Number

In testing for 1996, 2000 to 2020.

Balance rate, cylinder 5 `IMPALA_BALANCE_RATE_CYL_5`

Service 22DID 1633
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{64} - 512$
Range: -512 to 511
Unit: Number

In testing for 1996, 2000 to 2020.

Balance rate, cylinder 6 `IMPALA_BALANCE_RATE_CYL_6`

Service 22DID 1634
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{64} - 512$
Range: -512 to 511
Unit: Number

In testing for 1996, 2000 to 2020.

Barometric pressure `BARO`SAE J1979Confirmed

Normally obtained from one of a dedicated barometric sensor, a MAP sensor at key-on and during certain modes of driving, or inferred from a MAF sensor and other inputs during certain modes of driving. The control module reports BARO from whatever source it is derived from.

Service 01PID 33
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 kPa
Unit: kPa

Confirmed for 2011, 2013. Supported for 1996, 2007, 2014, 2016 to 2019.

Barometric pressure, V6 `IMPALA_BAROMETRIC_P_V6`

Service 22DID 1251
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 kPa
Unit: kPa

In testing for 1996, 2000 to 2020.

Cabin A/C high side sensor voltage `IMPALA_CABIN_AC_HIGH_SIDE_V`

Service 22DID 1144
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{50}$
Range: 0 to 5.1 V
Unit: V

In testing for 1996, 2000 to 2020.

Calculated engine load `LOAD_PCT`SAE J1979Confirmed

Represents the amount of work the engine is doing. Expected to reach 100% at wide open throttle/wide open pedal at any altitude, temperature or rpm for both naturally aspirated and boosted engines. If engine load is limited for powertrain protection e.g. engine/turbocharger protection, this value may not reach 100%. For hybrid vehicles, indicates the torque produced only by the internal combustion engine, not the torque being delivered by the entire powertrain. For electric vehicles, the meaning of this parameter is undefined.

Pelican can show this parameter as the engine load.

Service 01PID 04
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2007, 2011, 2013 to 2014, 2017, 2019. Supported for 1996, 2016, 2018, 2020.

Calculated engine oil pressure `IMPALA_EOP_CALC`Confirmed

Service 22DID 1C1B
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 400}{100}$
Range: 0 to 1020 kPa
Unit: kPa

0x00 = 0 → $\frac{0 \times 400}{100}$ = 0 kPa

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Calculated engine oil temperature `IMPALA_EOT_CALC`Confirmed

Pelican can show this parameter as the engine oil temperature.

Service 22DID 1154
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

0x77 = 119 → $119 - 40$ = 79 °C

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Catalyst temperature bank 1, sensor 1 `CATEMP11`SAE J1979Confirmed

Service 01PID 3C
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{10} - 40$
Range: -40 to 6513.5 °C
Unit: °C

Confirmed for 2007, 2011, 2013. Supported for 1996, 2014, 2016 to 2019.

Catalyst temperature bank 2, sensor 1 `CATEMP21`SAE J1979Confirmed

Service 01PID 3D
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{10} - 40$
Range: -40 to 6513.5 °C
Unit: °C

Confirmed for 2013. Supported for 1996, 2018.

Commanded equivalence ratio `EQ_RAT`SAE J1979Confirmed

Commanded fuel/air equivalence ratio (lambda): actual A/F ratio over stoichiometric A/F ratio, so above 1 is lean and below 1 is rich. Multiply by the fuel's stoichiometric A/F ratio for the commanded A/F ratio (gasoline: 14.64 x 0.95 = 13.9). Systems with conventional oxygen sensors show the commanded value in open loop and 1.000 in closed loop; systems with wide-range (linear) sensors show it in both. On engines whose banks are controlled independently, this is bank 1.

Pelican can show this parameter as the commanded lambda.

Service 01PID 44
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{32768}$
Range: 0 to 1.99
Unit: Number

Confirmed for 2007, 2011, 2013 to 2014, 2017, 2019.

Commanded evaporative purge `EVAP_PCT`SAE J1979Confirmed

Service 01PID 2E
Module7E0 → 7E8
Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2011, 2013. Supported for 1996, 2007, 2014, 2016 to 2020.

Commanded throttle actuator control `TAC_PCT`SAE J1979Confirmed

Service 01PID 4C
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2011, 2013.

Cooling fan motor command `IMPALA_COOLING_FAN_MOTOR_CMD`Confirmed

Service 22DID 13AF
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

0x00 = 0 → $\frac{0 \times 100}{255}$ = 0 %

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Cruise control status `IMPALA_CRUISE_CTRL_STAT`

Service 22DID 2067
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Engine coolant temperature `ECT`SAE J1979Confirmed

Your engine temperature must operate within a certain temperature range to operate efficiently and safely. If it runs too hot, then your engine could be permanently damaged. If it runs too cold, then your engine will use more fuel than necessary.

Pelican can show this parameter as the engine coolant temperature.

Service 01PID 05
Module7E0 → 7E8
Every500 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

Confirmed for 2007, 2011, 2013 to 2014, 2017, 2019. Supported for 1996, 2016, 2018, 2020.

Engine oil absolute pressure `IMPALA_EOP_ABS`Confirmed

Service 22DID 2344
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 400}{100}$
Range: 0 to 1020 kPa
Unit: kPa

0x00 = 0 → $\frac{0 \times 400}{100}$ = 0 kPa

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Engine oil life remaining `IMPALA_EO_LIFE_REMAINING`

Service 22DID 4DC0
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Engine oil pressure `IMPALA_EOP`Confirmed

Service 22DID 2345
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 400}{100}$
Range: 0 to 1020 kPa
Unit: kPa

0x00 = 0 → $\frac{0 \times 400}{100}$ = 0 kPa

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Engine oil pressure `IMPALA_EOP_DA11`

Service 22DID 1470
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 400}{100}$
Range: 0 to 1020 kPa
Unit: kPa

In testing for 1996, 2000 to 2020.

Engine oil pressure 2 `IMPALA_EOP_2`

Reads 0 psi at the sensor's zero-pressure floor, raw 36; the 0.6 psi slope is not yet checked against a gauge.

Service 22DID 115C
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 3}{5} - 21.6$
Range: -21.6 to 131.39 psi
Unit: psi

In testing for 1996, 2000 to 2020.

Engine oil pressure control solenoid valve command `IMPALA_EOP_CTRL_SOLENOID_VALVE_CMD`Confirmed

Service 22DID 3318
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bit 0 of the reply.

Formula: $val$
Range: 0 to 1
Unit: Off or on

0b0 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Engine oil temperature `IMPALA_EOT`

Pelican can show this parameter as the engine oil temperature.

Service 22DID 005C
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

In testing for 1996, 2000 to 2020.

Engine oil temperature 2 `IMPALA_EOT_2`

Service 22DID 153E
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

In testing for 1996, 2000 to 2020.

Engine RPM `RPM`SAE J1979Confirmed

Pelican can show this parameter as the engine speed.

Service 01PID 0C
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{4}$
Range: 0 to 16383.75 rpm
Unit: rpm

Confirmed for 2011, 2013. Supported for 1996, 2007, 2014, 2016 to 2020.

Engine torque `IMPALA_ENG_TQ`

Service 22DID 19DE
Module7E0 → 7E8
Every250 ms
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535 N·m
Unit: N·m

In testing for 1996, 2000 to 2020.

Engine torque `IMPALA_ENG_TQ_7E0`

Service 22DID 203F
Module7E0 → 7E8
Every250 ms
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{4}$
Range: 0 to 16383 N·m
Unit: N·m

In testing for 1996, 2000 to 2020.

Evap system vapor pressure `EVAP_VP`SAE J1979Confirmed

The pressure signal is normally obtained from a sensor located in the fuel tank or a sensor in an evaporative system vapor line.

Service 01PID 32
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula: $\frac{val}{4000}$
Range: -8192 to 8191.75 kPa
Unit: kPa

Confirmed for 2011, 2013. Supported for 2007, 2014, 2016 to 2020.

Evaporative emissions purge `IMPALA_EVAPORATIVE`

Service 22DID 1170
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{2.55}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Exhaust gas recirculation duty cycle `IMPALA_EGR_DUTY`

Service 22DID 1171
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{2.55}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Exhaust gas recirculation voltage `IMPALA_EGR_V`

Service 22DID 114B
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{51}$
Range: 0 to 5 V
Unit: V

In testing for 1996, 2000 to 2020.

Fuel pressure `FP`SAE J1979Confirmed

Service 01PID 0A
Module7E0 → 7E8
Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $val \times 3$
Range: 0 to 765 kPa
Unit: kPa

Confirmed for 2013. Supported for 2014, 2016 to 2020.

Fuel rail pressure `FRP`SAE J1979Confirmed

Fuel rail pressure at the engine when the reading is referenced to atmosphere (gage pressure).

Service 01PID 23
Module7E0 → 7E8
Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula: $val \times 10$
Range: 0 to 655350 kPa
Unit: kPa

Confirmed for 2013. Supported for 2014, 2016 to 2020.

Heated oxygen sensor `IMPALA_HEATED_OXYGEN_SENS`

Service 22DID 1145
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 mV
Unit: mV

In testing for 1996, 2000 to 2020.

Idle air control position `IMPALA_IDLE_AIR_CTRL_POS`

Service 22DID 1172
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Ignition input on/off/start `IMPALA_IGN_INPUT_ON_OFF`

Service 22DID 20D0
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Ignition power mode `IMPALA_IGN_POWER_MODE`

Service 22DID 207E
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Injector duty cycle bank 1 `IMPALA_INJECTOR_DUTY_CYCLE_BANK_1`Confirmed

Service 22DID 12C3
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 150}{10000}$
Range: 0 to 983.025 ms
Unit: ms

0x0037 = 55 → $\frac{55 \times 150}{10000}$ = 0.825 ms

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Injector duty cycle bank 2 `IMPALA_INJECTOR_DUTY_CYCLE_BANK_2`Confirmed

Service 22DID 12C4
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 150}{10000}$
Range: 0 to 983.025 ms
Unit: ms

0x0049 = 73 → $\frac{73 \times 150}{10000}$ = 1.095 ms

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Injector pulse width, cylinder 1 `IMPALA_INJ_WIDTH_CYL_1`

Service 22DID 1193
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{65.535}$
Range: 0 to 1000 ms
Unit: ms

In testing for 1996, 2000 to 2020.

Intake air temperature `IAT`SAE J1979Confirmed

Service 01PID 0F
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

Confirmed for 2011. Supported for 1996, 2007, 2013 to 2014, 2016 to 2020.

Intake air temperature 2 `IMPALA_IAT_2`

Service 22DID 1538
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

In testing for 1996, 2000 to 2020.

Intake manifold absolute pressure `MAP`SAE J1979Confirmed

Service 01PID 0B
Module7E0 → 7E8
Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 kPa
Unit: kPa

Confirmed for 2011. Supported for 2007, 2013 to 2014, 2016 to 2020.

Knock retard `IMPALA_KNOCK_RETARD`Confirmed

Service 22DID 11A6
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 22}{100}$
Range: 0 to 56.1 °
Unit: °

0x00 = 0 → $\frac{0 \times 22}{100}$ = 0 °

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Knock retard, alternate `IMPALA_KNOCK_RETARD_ALT`

Service 22DID 125D
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 °
Unit: °

In testing for 1996, 2000 to 2020.

Knock sensor active counter `IMPALA_KNOCK_SENS_ACTIVE`

Service 22DID 125E
Module7E0 → 7E8
Every3600 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Last shift time `IMPALA_LAST_SHIFT_TIME`

Service 22DID 1992
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{40}$
Range: 0 to 6.375 s
Unit: s

In testing for 1996, 2000 to 2020.

Long term fuel trim (bank 1) `LONGFT1`SAE J1979Confirmed

Service 01PID 07
Module7E0 → 7E8
Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{128} - 100$
Range: -100 to 99.2 %
Unit: %

Confirmed for 2011. Supported for 1996, 2007, 2013 to 2014, 2016 to 2020.

Mass airflow sensor `IMPALA_MAF`Confirmed

Pelican can show this parameter as the mass air flow.

Service 22DID 0010
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2020

Example reply from a 2017 Chevrolet Impala.

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 100}{10000}$
Range: 0 to 655.35 g/s
Unit: g/s

0x017B = 379 → $\frac{379 \times 100}{10000}$ = 3.79 g/s

Confirmed for 2017. In testing for 1996, 2000 to 2016, 2018 to 2020.

MIL cause `IMPALA_MIL_CAUSE`

Service 22DID 135F
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

MIL status `IMPALA_MIL_STAT`

Service 22DID 2020
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Misfire history, cylinder 1 `IMPALA_MIS_HISTORY_1`

Service 22DID 1201
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535
Unit: Number

In testing for 1996, 2000 to 2020.

Misfire history, cylinder 2 `IMPALA_MIS_HISTORY_2`

Service 22DID 1202
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535
Unit: Number

In testing for 1996, 2000 to 2020.

Misfire history, cylinder 3 `IMPALA_MIS_HISTORY_3`

Service 22DID 1203
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535
Unit: Number

In testing for 1996, 2000 to 2020.

Misfire history, cylinder 4 `IMPALA_MIS_HISTORY_4`

Service 22DID 1204
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535
Unit: Number

In testing for 1996, 2000 to 2020.

Misfire history, cylinder 5 `IMPALA_MIS_HISTORY_5`

Service 22DID 11F8
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535
Unit: Number

In testing for 1996, 2000 to 2020.

Misfire history, cylinder 6 `IMPALA_MIS_HISTORY_6`

Service 22DID 11F9
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $val$
Range: 0 to 65535
Unit: Number

In testing for 1996, 2000 to 2020.

Misfires, current, cylinder 1 `IMPALA_MISFIRES_C1_CUR`Confirmed

Service 22DID 1206
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

0x00 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Misfires, current, cylinder 2 `IMPALA_MISFIRES_C2_CUR`Confirmed

Service 22DID 1205
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

0x00 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Misfires, current, cylinder 3 `IMPALA_MISFIRES_C3_CUR`Confirmed

Service 22DID 1207
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

0x00 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Misfires, current, cylinder 4 `IMPALA_MISFIRES_C4_CUR`Confirmed

Service 22DID 1208
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

0x00 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Misfires, current, cylinder 5 `IMPALA_MISFIRES_C5_CUR`Confirmed

Service 22DID 11EA
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

0x00 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Misfires, current, cylinder 6 `IMPALA_MISFIRES_C6_CUR`Confirmed

Service 22DID 11EB
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

0x00 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Outside air temperature `IMPALA_AAT`

Service 22DID 1161
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

In testing for 1996, 2000 to 2020.

Pressure control solenoid current, actual `IMPALA_P_CTRL_SOLENOID_ACT`

Service 22DID 199E
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 mA
Unit: mA

In testing for 1996, 2000 to 2020.

Pressure control solenoid current, reference `IMPALA_P_CTRL_SOLENOID`

Service 22DID 199F
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 mA
Unit: mA

In testing for 1996, 2000 to 2020.

Remaining oil life `IMPALA_REMAINING_OIL_LIFE`

Service 22DID 119F
Module7E0 → 7E8
Every30 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 %
Unit: %

In testing for 1996, 2000 to 2020.

Short term fuel trim (bank 1) `SHRTFT1`SAE J1979Confirmed

Correction being used by the closed-loop fuel algorithm.

Pelican can show this parameter as the short term fuel trim.

Service 01PID 06
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{128} - 100$
Range: -100 to 99.2 %
Unit: %

Confirmed for 2007, 2011, 2013, 2017. Supported for 1996, 2014, 2016, 2018 to 2020.

Short term fuel trim (bank 2) `SHRTFT2`SAE J1979Confirmed

Correction being used by the closed-loop fuel algorithm.

Pelican can show this parameter as the short term fuel trim.

Service 01PID 08
Module7E0 → 7E8
Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{128} - 100$
Range: -100 to 99.2 %
Unit: %

Confirmed for 2013, 2017. Supported for 1996, 2014, 2016, 2018 to 2020.

Throttle position calculated `IMPALA_THROTTLE_POS_CALC`

Service 22DID 2810
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 20}{51}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Timing advance `SPARKADV`SAE J1979Confirmed

Ignition timing spark advance for the first cylinder. Measured in degrees before dead center. Minus is degrees before dead center, positive is degrees after.

Service 01PID 0E
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val}{2} - 64$
Range: -64 to 63.5 °
Unit: °

Confirmed for 2011. Supported for 1996, 2007, 2013 to 2014, 2016 to 2020.

Total knock retard `IMPALA_TOTAL_KNOCK_RETARD`Confirmed

Service 22DID 12D9
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 45}{100}$
Range: 0 to 114.75 °
Unit: °

0x00 = 0 → $\frac{0 \times 45}{100}$ = 0 °

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Total misfire `IMPALA_TOTAL_MISFIRE`Confirmed

Service 22DID 1200
Module7E0 → 7E8
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

0x00 = 0 → 0

Confirmed for 2017, 2020. In testing for 1996, 2000 to 2016, 2018 to 2019.

Transmission fluid temperature `IMPALA_ATF_T`Confirmed

Pelican can show this parameter as the transmission fluid temperature.

Service 22DID 1940
Module7E2 → 7EA
Every1 s
Testing for 1996, 2000 to 2016, 2018 to 2019

Example reply from a 2017 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

0x77 = 119 → $119 - 40$ = 79 °C

Confirmed for 2017. In testing for 1996, 2000 to 2016, 2018 to 2019. Supported for 2020.

Transmission fluid temperature, variant 1 `IMPALA_ATF_T_VAR_1`Confirmed

Pelican can show this parameter as the transmission fluid temperature.

Service 22DID 1940
Module7E0 → 7E8
Every5 s
Testing for 1996, 2000 to 2019

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

0x75 = 117 → $117 - 40$ = 77 °C

Confirmed for 2020. In testing for 1996, 2000 to 2019.

Transmission fluid temperature, variant 6 `IMPALA_ATF_T_VAR_6`

Pelican can show this parameter as the transmission fluid temperature.

Service 22DID 280D
Module7E2 → 7EA
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

In testing for 1996, 2000 to 2020.

OxygenSensors

02S Bank 1, Sensor 1 present `O2S11_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 7 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

02S Bank 1, Sensor 2 present `O2S12_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 6 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

02S Bank 1, Sensor 3 present `O2S13_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 5 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

02S Bank 1, Sensor 4 present `O2S14_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 4 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

02S Bank 2, Sensor 1 present `O2S21_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 3 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

02S Bank 2, Sensor 2 present `O2S22_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 2 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

02S Bank 2, Sensor 3 present `O2S23_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 1 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

02S Bank 2, Sensor 4 present `O2S24_EXISTS`SAE J1979Confirmed

Service 01PID 13
Module7E0 → 7E8
Every3600 s

Bit 0 of the reply.

Formula: $val$
Range: 0 to 1
Unit: No or yes

Confirmed for 2007. Supported for 1996, 2011, 2013 to 2014, 2016 to 2020.

Fuel

Alcohol fuel percentage `ALCH_PCT`SAE J1979Confirmed

Indicates the percentage of alcohol contained in ethanol or methanol fuels, if used. For example, ethanol fuel (E85) normally contains 85% ethanol, in which case this parameter will display 85%

Service 01PID 52
Module7E0 → 7E8
Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2007, 2011.

Ethanol content of fuel `IMPALA_ETHANOL_CONTENT_FUEL`

Service 22DID 0052
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Fuel consumption rate `IMPALA_FUEL_RATE`

Service 22DID 005E
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 500}{10000}$
Range: 0 to 3276.75 L
Unit: L

In testing for 1996, 2000 to 2020.

Fuel injection, cylinder 1 `IMPALA_FUEL_INJECTION_C1`

Service 22DID 20AC
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 10}{10000}$
Range: 0 to 65.535 ms
Unit: ms

In testing for 1996, 2000 to 2020.

Fuel injection, cylinder 2 `IMPALA_FUEL_INJECTION_C2`

Service 22DID 1194
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 1000}{65535}$
Range: 0 to 1000 ms
Unit: ms

In testing for 1996, 2000 to 2020.

Fuel injection, cylinder 3 `IMPALA_FUEL_INJECTION_C3`

Service 22DID 1195
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 1000}{65535}$
Range: 0 to 1000 ms
Unit: ms

In testing for 1996, 2000 to 2020.

Fuel injection, cylinder 4 `IMPALA_FUEL_INJECTION_C4`

Service 22DID 1196
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 1000}{65535}$
Range: 0 to 1000 ms
Unit: ms

In testing for 1996, 2000 to 2020.

Fuel injection, cylinder 5 `IMPALA_FUEL_INJECTION_C5`

Service 22DID 1197
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 1000}{65535}$
Range: 0 to 1000 ms
Unit: ms

In testing for 1996, 2000 to 2020.

Fuel injection, cylinder 6 `IMPALA_FUEL_INJECTION_C6`

Service 22DID 1198
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 1000}{65535}$
Range: 0 to 1000 ms
Unit: ms

In testing for 1996, 2000 to 2020.

Fuel remaining `IMPALA_FLI`

Pelican can show this parameter as the fuel tank level.

Service 22DID 002F
Module7E0 → 7E8
Every30 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

In testing for 1996, 2000 to 2020.

Fuel system 1 status `FUELSYS1`SAE J1979Confirmed

Service 01PID 03
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Unit: Named states

States
Raw value	State	Meaning
`0`	`OFF`	No status reported: this fuel system is not running or not present, e.g. the engine is off
`1`	`OL`	Open loop - has not yet satisfied conditions to go closed loop
`2`	`CL`	Closed loop - using oxygen sensor(s) as feedback for fuel control
`4`	`OL-Drive`	Open loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
`8`	`OL-Fault`	Open loop - due to detected system fault
`16`	`CL-Fault`	Closed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
`32`	`OL B2`	Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
`64`	`OL-Drive B2`	Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
`68`	`OL-Drive B1+B2`	Open loop due to driving conditions on bank 1 and bank 2 (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
`128`	`OL-Fault B2`	Open loop - due to detected system fault (Bank 2)

Confirmed for 2007, 2011. Supported for 1996, 2013 to 2014, 2016 to 2020.

Fuel system 2 status `FUELSYS2`SAE J1979Confirmed

Service 01PID 03
Module7E0 → 7E8
Every250 ms

Bits 8 to 15 of the reply, 8 bits.

Unit: Named states

States
Raw value	State	Meaning
`0`	`OFF`	No status reported: this fuel system is not running or not present, e.g. the engine is off
`1`	`OL`	Open loop - has not yet satisfied conditions to go closed loop
`2`	`CL`	Closed loop - using oxygen sensor(s) as feedback for fuel control
`4`	`OL-Drive`	Open loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
`8`	`OL-Fault`	Open loop - due to detected system fault
`16`	`CL-Fault`	Closed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
`32`	`OL B2`	Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
`64`	`OL-Drive B2`	Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
`68`	`OL-Drive B1+B2`	Open loop due to driving conditions on bank 1 and bank 2 (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
`128`	`OL-Fault B2`	Open loop - due to detected system fault (Bank 2)

Confirmed for 2007, 2011. Supported for 1996, 2013 to 2014, 2016 to 2020.

Fuel tank level `FLI`SAE J1979Confirmed

Pelican can show this parameter as the fuel tank level.

Service 01PID 2F
Module7E0 → 7E8
Every1 s

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 100}{255}$
Range: 0 to 100 %
Unit: %

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2018. Supported for 1996, 2019 to 2020.

Fuel tank pressure `IMPALA_FUEL_TANK_P`

Service 22DID F432
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val}{33333.33333}$
Range: 0 to 1.96 psi
Unit: psi

In testing for 1996, 2000 to 2020.

Fuel temperature `IMPALA_FUEL_T`

Service 22DID 3218
Module7E0 → 7E8
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $\frac{val \times 50}{100}$
Range: 0 to 127.5 °C
Unit: °C

In testing for 1996, 2000 to 2020.

Total fuel consumption rate `IMPALA_TOTAL_FUEL_CONSUMPTION_RATE`

Service 22DID 009D
Module7E0 → 7E8
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits.

Formula: $\frac{val \times 200}{10000}$
Range: 0 to 1310.7 g/s
Unit: g/s

In testing for 1996, 2000 to 2020.

Movement

Desired idle speed `IMPALA_DES_IDLE_SPD`

Service 22DID 1192
Module7E0 → 7E8
Every250 ms
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val \times 12.5$
Range: 0 to 3187.5 rpm
Unit: rpm

In testing for 1996, 2000 to 2020.

Torque converter clutch slip speed `IMPALA_TC_SLIP_VSS`

Service 22DID 1991
Module7E2 → 7EA
Every250 ms
Testing

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula: $\frac{val \times 1250}{10000}$
Range: -4096 to 4095.875 rpm
Unit: rpm

In testing for 1996, 2000 to 2020.

Torque converter clutch slip speed `IMPALA_TQ_CONV_CLU_SLIP_SPD`

Service 22DID 1991
Module7E0 → 7E8
Every250 ms
Testing

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula: $\frac{val}{8}$
Range: -4096 to 4095.875 rpm
Unit: rpm

In testing for 1996, 2000 to 2020.

Vehicle speed `IMPALA_VSS`Confirmed

Pelican can show this parameter as the speed.

Service 22DID 000D
Module7E0 → 7E8
Every250 ms
Testing for 1996, 2000 to 2006, 2008 to 2010, 2012, 2015

Example reply from a 2020 Chevrolet Impala.

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 km/h
Unit: km/h

0x00 = 0 → 0 km/h

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2020. In testing for 2000 to 2002, 2004 to 2006, 2008 to 2010, 2012, 2015. Not supported for 1996, 2003.

Vehicle speed `VSS`SAE J1979Confirmed

Pelican can show this parameter as the speed.

Service 01PID 0D
Module7E0 → 7E8
Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255 km/h
Unit: km/h

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2017. Supported for 1996, 2018 to 2020.

OBD

OBD requirements to which vehicle is designed `OBDSUP`SAE J1979Confirmed

Service 01PID 1C
Module7E0 → 7E8
Every3600 s

Bits 0 to 7 of the reply, 8 bits.

Unit: Named states

States
Raw value	State	Meaning
`1`	`OBD II`	OBD II (California ARB)
`2`	`OBD`	OBD (Federal EPA)
`3`	`OBD & OBD II`
`4`	`OBD I`
`5`	`NO OBD`	Not OBD compliant
`6`	`EOBD`
`7`	`EOBD & OBD II`
`8`	`EOBD & OBD`
`9`	`EOBD, OBD, OBD II`
`10`	`JOBD`
`11`	`JOBD & OBD II`
`12`	`JOBD & EOBD`
`13`	`JOBD, EOBD, OBD II`
`14`	`EURO IV B1`	Heavy duty vehicles (EURO IV) B1
`15`	`EURO V B2`	Heavy duty vehicles (EURO V) B2
`16`	`EURO C`	Heavy duty vehicles (EURO EEC) C (gas engines)
`17`	`EMD`	Engine manufacturer diagnostics (EMD)
`18`	`EMD+`	Engine Manufacturer Diagnostics Enhanced (EMD+)
`19`	`HD OBD-C`	Heavy Duty On-Board Diagnostics (Child/Partial)
`20`	`HD OBD`	Heavy Duty On-Board Diagnostics
`21`	`WWH OBD`	World Wide Harmonized OBD
`23`	`HD EOBD-I`	Heavy Duty Euro OBD Stage I without NOx Control
`24`	`HD EOBD-I N`	Heavy Duty Euro OBD Stage I with NOx Control
`25`	`HD EOBD-II`	Heavy Duty Euro OBD Stage II without NOx Control
`26`	`HD EOBD-II N`	Heavy Duty Euro OBD Stage II with NOx Control
`27`	`HD-ZEV`	Heavy Duty ZEV
`28`	`OBDBr-1`	Brazil OBD Phase 1
`29`	`OBDBr-2`	Brazil OBD Phase 2 and Phase 2+
`30`	`KOBD`	Korean OBD
`31`	`IOBD-I-BS4`	India BS4 OBD I
`32`	`IOBD-II-BS4`	India BS4 OBD II
`33`	`HD EOBD-VI`	Euro VI
`34`	`OBD, OBD II and HD OBD`
`35`	`OBDBr-3`	Brazil OBD Phase 3
`36`	`MC EOBD-I`	Motorcycle, Euro OBD-I
`37`	`MC EOBD-II`	Motorcycle, Euro OBD-II
`38`	`MC COBD-I`	Motorcycle, China OBD-I
`39`	`MC TOBD-I`	Motorcycle, Taiwan OBD-I
`40`	`MC JOBD-I`	Motorcycle, Japan OBD-I
`41`	`CN-OBD-6`	China Nationwide Stage 6
`42`	`OBDBr-P7`	Brazil OBD Phase 7
`43`	`CN-HDOBD-VI`	China Heavy Duty VI
`44`	`IOBD-I-BS6`	India BS6 OBD I
`45`	`IOBD-II-BS6`	India BS6 OBD II
`46`	`IHDOBD-BSVI`	India BSVI HD OBD
`47`	`OBDBr-P8`	Brazil OBD Phase 8
`48`	`HD-JOBD-II`	Japan Heavy Duty OBD-II
`49`	`HD-KOBD-II`	Korea Heavy Duty OBD-II
`50`	`CN-OROBD-IV`	China Off-Road IV OBD
`51`	`CARB ACC-II`	Light Duty ZEV, ACC-II
`52`	`MC JOBD-II`	Motorcycle, Japan OBD-II
`53`	`MC CARB OBD`	Motorcycle, California (CARB) OBD
`54`	`MC EPA OBD`	Motorcycle, Federal (EPA) OBD
`55`	`MC CARB & EPA OBD`	Motorcycle, 50-State (CARB & EPA) OBD
`56`	`HD ZEV CARB ZEP`	Heavy Duty ZEV, CARB ZEP
`57`	`CARB ACC-II & EPA TIER4`	Light Duty ZEV, CARB ACC-II and EPA Tier 4 (GTR 22)
`58`	`EPA TIER4`	Light Duty ZEV, EPA Tier 4 (GTR 22)
`59`	`EPA HD`	EPA HD OBD

Confirmed for 2007, 2011, 2014. Supported for 1996, 2013, 2016 to 2020.

Transmission

Clutch slip, AT C1, ring `IMPALA_CLU_SLIP_C1_RING`

Service 22DID 2851
Module7E2 → 7EA
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula: $\frac{val}{4}$
Range: -8192 to 8191 rpm
Unit: rpm

In testing for 1996, 2000 to 2020.

Clutch slip, AT C3, ring `IMPALA_CLU_SLIP_C3_RING`

Service 22DID 19D4
Module7E2 → 7EA
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula: $\frac{val}{4}$
Range: -8192 to 8191 rpm
Unit: rpm

In testing for 1996, 2000 to 2020.

Current gear `IMPALA_CURRENT_GEAR`

Service 22DID 1B30
Module7E2 → 7EA
Every250 ms
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 3$
Range: -3 to 252
Unit: Number

In testing for 1996, 2000 to 2020.

Current gear `IMPALA_CURRENT_GEAR_7E0`

Service 22DID 199A
Module7E0 → 7E8
Every250 ms
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Current gear, variant 2 `IMPALA_CURRENT_GEAR_VAR_2`

Service 22DID 199A
Module7E2 → 7EA
Every250 ms
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Current gear, variant 3 `IMPALA_CURRENT_GEAR_VAR_3`

Service 22DID 3201
Module7E0 → 7E8
Every250 ms
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val$
Range: 0 to 255
Unit: Number

In testing for 1996, 2000 to 2020.

Transmission fluid temperature, filtered `IMPALA_TF_T_FLTED`

Pelican can show this parameter as the transmission fluid temperature.

Service 22DID 295A
Module7E2 → 7EA
Every5 s
Testing

Bits 0 to 7 of the reply, 8 bits.

Formula: $val - 40$
Range: -40 to 215 °C
Unit: °C

In testing for 1996, 2000 to 2020.

Transmission input shaft speed, 2 `IMPALA_TRANS_ISS`

Service 22DID 1941
Module7E2 → 7EA
Every1 s
Testing

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula: $\frac{val}{4}$
Range: -8192 to 8191 rpm
Unit: rpm

In testing for 1996, 2000 to 2020.

Parameters

Battery

Control module voltage VPWRSAE J1979Confirmed

Ignition 1 voltage IMPALA_IGN_1_V

M control module voltage IMPALA_M_CTRL_MODULE_V

Climate

Ambient air temperature AATSAE J1979Confirmed

Clocks

Time since engine start IMPALA_RUNTMConfirmed

Time since engine start RUNTMSAE J1979Confirmed

Control

Absolute throttle position TPSAE J1979Confirmed

Absolute throttle position B TP_BSAE J1979Confirmed

Brake pedal position circuit signal IMPALA_BRAKE_PEDAL_POS

Relative throttle position TP_RSAE J1979Confirmed

Pedals

Accelerator pedal position D APP_DSAE J1979Confirmed

Accelerator pedal position E APP_ESAE J1979Confirmed

Doors

Hood position IMPALA_HOOD_POS

Hood switch IMPALA_HOOD_SWITCH

DTCs

Distance traveled since diagnostic trouble codes cleared CLR_DISTSAE J1979Confirmed

Distance traveled while MIL was activated MIL_DISTSAE J1979Confirmed

Malfunction indicator lamp MILSAE J1979Confirmed

Number of DTCs stored in this ECU DTC_CNTSAE J1979Confirmed

Number of warm-ups since diagnostic trouble codes cleared WARM_UPSSAE J1979Confirmed

Status

A/C system refrigerant monitoring ACRF_ENASAE J1979Confirmed

A/C system refrigerant monitoring completed ACRFCMPLSAE J1979Confirmed

A/C system refrigerant monitoring ready ACRF_RDYSAE J1979Confirmed

Catalyst monitoring CAT_ENASAE J1979Confirmed

Catalyst monitoring completed CAT_CMPLSAE J1979Confirmed

Catalyst monitoring ready CAT_RDYSAE J1979Confirmed

Comprehensive component monitoring completed CCM_CMPLSAE J1979Confirmed

Comprehensive component monitoring ready CCM_RDYSAE J1979Confirmed

EGR system monitoring EGR_ENASAE J1979Confirmed

EGR system monitoring completed EGR_CMPLSAE J1979Confirmed

EGR system monitoring ready EGR_RDYSAE J1979Confirmed

Evaporative system monitoring EVAP_ENASAE J1979Confirmed

Evaporative system monitoring completed EVAPCMPLSAE J1979Confirmed

Evaporative system monitoring ready EVAP_RDYSAE J1979Confirmed

Fuel system monitoring completed FUEL_CMPLSAE J1979Confirmed

Fuel system monitoring ready FUEL_RDYSAE J1979Confirmed

Heated catalyst monitoring HCAT_ENASAE J1979Confirmed

Heated catalyst monitoring completed HCATCMPLSAE J1979Confirmed

Heated catalyst monitoring ready HCAT_RDYSAE J1979Confirmed

Misfire monitoring completed MIS_CMPLSAE J1979Confirmed

Misfire monitoring ready MIS_RDYSAE J1979Confirmed

Oxygen sensor heater monitoring HTR_ENASAE J1979Confirmed

Oxygen sensor heater monitoring completed HTR_CMPLSAE J1979Confirmed

Oxygen sensor heater monitoring ready HTR_RDYSAE J1979Confirmed

Oxygen sensor monitoring O2S_ENASAE J1979Confirmed

Oxygen sensor monitoring completed O2S_CMPLSAE J1979Confirmed

Oxygen sensor monitoring ready O2S_RDYSAE J1979Confirmed

Secondary air system monitoring AIR_ENASAE J1979Confirmed

Secondary air system monitoring completed AIR_CMPLSAE J1979Confirmed

Secondary air system monitoring ready AIR_RDYSAE J1979Confirmed

Support

A/C system refrigerant monitoring supported ACRF_SUPSAE J1979Confirmed

Catalyst monitoring supported CAT_SUPSAE J1979Confirmed

Comprehensive component monitoring enabled CCM_ENASAE J1979Confirmed

Comprehensive component monitoring supported CCM_SUPSAE J1979Confirmed

Compression ignition monitoring supported CIM_SUPSAE J1979Confirmed

Compression ignition monitoring supported CIM_SUP_FLAGSAE J1979Confirmed

EGR system monitoring supported EGR_SUPSAE J1979Confirmed

Evaporative system monitoring supported EVAP_SUPSAE J1979Confirmed

Fuel system monitoring enabled FUEL_ENASAE J1979Confirmed

Fuel system monitoring supported FUEL_SUPSAE J1979Confirmed

Heated catalyst monitoring supported HCAT_SUPSAE J1979Confirmed

Misfire monitoring enabled MIS_ENASAE J1979Confirmed

Misfire monitoring supported MIS_SUPSAE J1979Confirmed

Oxygen sensor heater monitoring supported HTR_SUPSAE J1979Confirmed

Oxygen sensor monitoring supported O2S_SUPSAE J1979Confirmed

Secondary air system monitoring supported AIR_SUPSAE J1979Confirmed

Engine

1-2 shift error IMPALA_1_2_SHIFT_ERROR

1-2 shift time IMPALA_1_2_SHIFT_TIME

2-3 shift error IMPALA_2_3_SHIFT_ERROR

2-3 shift time IMPALA_2_3_SHIFT_TIME

Control module voltage `VPWR`SAE J1979Confirmed

Ignition 1 voltage `IMPALA_IGN_1_V`

M control module voltage `IMPALA_M_CTRL_MODULE_V`

Ambient air temperature `AAT`SAE J1979Confirmed

Time since engine start `IMPALA_RUNTM`Confirmed

Time since engine start `RUNTM`SAE J1979Confirmed

Absolute throttle position `TP`SAE J1979Confirmed

Absolute throttle position B `TP_B`SAE J1979Confirmed

Brake pedal position circuit signal `IMPALA_BRAKE_PEDAL_POS`

Relative throttle position `TP_R`SAE J1979Confirmed

Accelerator pedal position D `APP_D`SAE J1979Confirmed

Accelerator pedal position E `APP_E`SAE J1979Confirmed

Hood position `IMPALA_HOOD_POS`

Hood switch `IMPALA_HOOD_SWITCH`

Distance traveled since diagnostic trouble codes cleared `CLR_DIST`SAE J1979Confirmed

Distance traveled while MIL was activated `MIL_DIST`SAE J1979Confirmed

Malfunction indicator lamp `MIL`SAE J1979Confirmed

Number of DTCs stored in this ECU `DTC_CNT`SAE J1979Confirmed

Number of warm-ups since diagnostic trouble codes cleared `WARM_UPS`SAE J1979Confirmed

A/C system refrigerant monitoring `ACRF_ENA`SAE J1979Confirmed

A/C system refrigerant monitoring completed `ACRFCMPL`SAE J1979Confirmed

A/C system refrigerant monitoring ready `ACRF_RDY`SAE J1979Confirmed

Catalyst monitoring `CAT_ENA`SAE J1979Confirmed

Catalyst monitoring completed `CAT_CMPL`SAE J1979Confirmed

Catalyst monitoring ready `CAT_RDY`SAE J1979Confirmed

Comprehensive component monitoring completed `CCM_CMPL`SAE J1979Confirmed

Comprehensive component monitoring ready `CCM_RDY`SAE J1979Confirmed

EGR system monitoring `EGR_ENA`SAE J1979Confirmed

EGR system monitoring completed `EGR_CMPL`SAE J1979Confirmed

EGR system monitoring ready `EGR_RDY`SAE J1979Confirmed

Evaporative system monitoring `EVAP_ENA`SAE J1979Confirmed

Evaporative system monitoring completed `EVAPCMPL`SAE J1979Confirmed

Evaporative system monitoring ready `EVAP_RDY`SAE J1979Confirmed

Fuel system monitoring completed `FUEL_CMPL`SAE J1979Confirmed

Fuel system monitoring ready `FUEL_RDY`SAE J1979Confirmed

Heated catalyst monitoring `HCAT_ENA`SAE J1979Confirmed

Heated catalyst monitoring completed `HCATCMPL`SAE J1979Confirmed

Heated catalyst monitoring ready `HCAT_RDY`SAE J1979Confirmed

Misfire monitoring completed `MIS_CMPL`SAE J1979Confirmed

Misfire monitoring ready `MIS_RDY`SAE J1979Confirmed

Oxygen sensor heater monitoring `HTR_ENA`SAE J1979Confirmed

Oxygen sensor heater monitoring completed `HTR_CMPL`SAE J1979Confirmed

Oxygen sensor heater monitoring ready `HTR_RDY`SAE J1979Confirmed

Oxygen sensor monitoring `O2S_ENA`SAE J1979Confirmed

Oxygen sensor monitoring completed `O2S_CMPL`SAE J1979Confirmed

Oxygen sensor monitoring ready `O2S_RDY`SAE J1979Confirmed

Secondary air system monitoring `AIR_ENA`SAE J1979Confirmed

Secondary air system monitoring completed `AIR_CMPL`SAE J1979Confirmed

Secondary air system monitoring ready `AIR_RDY`SAE J1979Confirmed

A/C system refrigerant monitoring supported `ACRF_SUP`SAE J1979Confirmed

Catalyst monitoring supported `CAT_SUP`SAE J1979Confirmed

Comprehensive component monitoring enabled `CCM_ENA`SAE J1979Confirmed

Comprehensive component monitoring supported `CCM_SUP`SAE J1979Confirmed

Compression ignition monitoring supported `CIM_SUP`SAE J1979Confirmed

Compression ignition monitoring supported `CIM_SUP_FLAG`SAE J1979Confirmed

EGR system monitoring supported `EGR_SUP`SAE J1979Confirmed

Evaporative system monitoring supported `EVAP_SUP`SAE J1979Confirmed

Fuel system monitoring enabled `FUEL_ENA`SAE J1979Confirmed

Fuel system monitoring supported `FUEL_SUP`SAE J1979Confirmed

Heated catalyst monitoring supported `HCAT_SUP`SAE J1979Confirmed

Misfire monitoring enabled `MIS_ENA`SAE J1979Confirmed

Misfire monitoring supported `MIS_SUP`SAE J1979Confirmed

Oxygen sensor heater monitoring supported `HTR_SUP`SAE J1979Confirmed

Oxygen sensor monitoring supported `O2S_SUP`SAE J1979Confirmed

Secondary air system monitoring supported `AIR_SUP`SAE J1979Confirmed

1-2 shift error `IMPALA_1_2_SHIFT_ERROR`

1-2 shift time `IMPALA_1_2_SHIFT_TIME`

2-3 shift error `IMPALA_2_3_SHIFT_ERROR`

2-3 shift time `IMPALA_2_3_SHIFT_TIME`

3-4 shift error `IMPALA_3_4_SHIFT_ERROR`

3-4 shift time `IMPALA_3_4_SHIFT_TIME`

Absolute load value `LOAD_ABS`SAE J1979Confirmed

Active grille cold temperature mode `IMPALA_ACTIVE_GRILLE_COLD_T`

Active grille shutter position `IMPALA_ACTIVE_GRILLE_SHUTTER_POS`

Active grille shutter position command `IMPALA_ACTIVE_GRILLE`

Air conditioning high side pressure `IMPALA_AC_HIGH_SIDE_P`

Air filter life remaining `IMPALA_AIRFILT_LIFE`

Air flow rate from mass air flow sensor `MAF`SAE J1979Confirmed

Air/fuel ratio, commanded `IMPALA_AIR_FUEL_RAT_CMD`

Ambient air temperature 2 `IMPALA_AIR_TEMP_AMBIENT_2`