Chevrolet Silverado 1500

Transmission parameters

The Chevrolet Silverado 1500 has 4 transmission parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Transmission fluid temperature SILVERADO1500_TFTConfirmed

Pelican can show this parameter as the transmission fluid temperature.

  • Request22 19 40
  • Service 22DID 1940
  • ModuleDA18 → 2AF118
  • Every1 s
  • Testing for 1999 to 2021

Example reply from a 2026 Chevrolet Silverado 1500.

Bits 0 to 7 of the reply, 8 bits.

0x31 = 49 → (49 − 40) = 9 °C

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2022 to 2026. In testing for 1999 to 2007, 2009, 2011, 2013 to 2014. Not supported for 2008, 2010, 2012, 2015 to 2021.

  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.

Current gear SILVERADO1500_CURRENT_GEARConfirmed

  • Request22 1B 30
  • Service 22DID 1B30
  • ModuleDA18 → 2AF118
  • Every1 s
  • Testing for 1999 to 2021

Example reply from a 2026 Chevrolet Silverado 1500.

Bits 0 to 7 of the reply, 8 bits.

0x02 = 2 → (2 − 3) = -1

Formula
(val − 3)
Range
-3 to 252
Unit
Number

Confirmed for 2022 to 2026. In testing for 1999 to 2007, 2009, 2011, 2013 to 2014. Not supported for 2008, 2010, 2012, 2015 to 2021.

Current gear SILVERADO1500_CURRENT_GEAR_VAR_2Confirmed

  • Request22 19 9A
  • Service 22DID 199A
  • Module7E2 → 7EA
  • Every250 ms
  • Testing for 1999 to 2009, 2011 to 2019, 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Silverado 1500.

Bits 0 to 7 of the reply, 8 bits.

0x01 = 1 → 1

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2010, 2020, 2022. In testing for 1999 to 2009, 2011 to 2014, 2016 to 2019, 2021, 2023 to 2026. Not supported for 2015.

Transmission fluid temperature SILVERADO1500_TFTConfirmed

Pelican can show this parameter as the transmission fluid temperature.

  • Request22 19 40
  • Service 22DID 1940
  • ModuleDA18 → 2AF118
  • Every1 s
  • Testing for 1999 to 2021

Example reply from a 2026 Chevrolet Silverado 1500.

Bits 0 to 7 of the reply, 8 bits.

0x31 = 49 → (49 − 40) = 9 °C

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2022 to 2026. In testing for 1999 to 2007, 2009, 2011, 2013 to 2014. Not supported for 2008, 2010, 2012, 2015 to 2021.

Transmission fluid temperature, filtered SILVERADO1500_TF_T_FLTEDConfirmed

  • Request22 29 5A
  • Service 22DID 295A
  • ModuleDA18 → 2AF118
  • Every1 s
  • Testing for 1999 to 2021

Example reply from a 2026 Chevrolet Silverado 1500.

Bits 0 to 7 of the reply, 8 bits.

0x39 = 57 → (57 − 40) = 17 °C

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2022 to 2026. In testing for 1999 to 2007, 2009, 2011, 2013 to 2014. Not supported for 2008, 2010, 2012, 2015 to 2021.

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