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Chevrolet Impala

Movement parameters

The Chevrolet Impala has 5 movement parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Vehicle speed IMPALA_VSSConfirmed

Pelican can show this parameter as the speed.

  • Request22 00 0D
  • Service 22DID 000D
  • Module7E0 → 7E8
  • Every250 ms
  • Testing for 1988 to 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.

0x00 = 0 → 0 km/h

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

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2020. In testing for 1988 to 1995, 2000 to 2002, 2004 to 2006, 2008 to 2010, 2012, 2015. Not supported for 1996, 2003.

  1. The parameter's name and its ID in the OBDb. Confirmed shows when a response from a real car confirms the parameter.
  2. The clutch mark shows a Connectable, a parameter that Pelican surfaces in its interface.
  3. The service and PID/DID asked for, the control module it's sent to, and how often Pelican asks.
  4. The reply's bytes. The parameter's bytes are blue. Bytes for other parameters in the same reply are grayed out. Hover over a byte to see the parameter it represents.
  5. Where the parameter is in the response, and how Pelican converts the raw value into a value.
  6. A real reply, decoded. The raw value comes first, then the reading.
  7. Which model years have tested this parameter.

Desired idle speed IMPALA_DES_IDLE_SPD

  • Request22 11 92
  • Service 22DID 1192
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 12.5)
Range
0 to 3187.5 rpm
Unit
rpm

In testing for 1988 to 1996, 2000 to 2020.

Torque converter clutch slip speed IMPALA_TC_SLIP_VSS

  • Request22 19 91
  • Service 22DID 1991
  • Module7E2 → 7EA
  • Every250 ms
  • Testing

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

Formula
(val × 1250 ÷ 10000)
Range
-4096 to 4095.875 rpm
Unit
rpm

In testing for 1988 to 1996, 2000 to 2020.

Torque converter clutch slip speed IMPALA_TQ_CONV_CLU_SLIP_SPD

  • Request22 19 91
  • Service 22DID 1991
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

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

Formula
(val ÷ 8)
Range
-4096 to 4095.875 rpm
Unit
rpm

In testing for 1988 to 1996, 2000 to 2020.

Vehicle speed IMPALA_VSSConfirmed

Pelican can show this parameter as the speed.

  • Request22 00 0D
  • Service 22DID 000D
  • Module7E0 → 7E8
  • Every250 ms
  • Testing for 1988 to 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.

0x00 = 0 → 0 km/h

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

Confirmed for 2007, 2011, 2013 to 2014, 2016 to 2020. In testing for 1988 to 1995, 2000 to 2002, 2004 to 2006, 2008 to 2010, 2012, 2015. Not supported for 1996, 2003.

Vehicle speed VSSSAE J1979Confirmed

Pelican can show this parameter as the speed.

  • Request01 0D
  • 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.

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