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Chevrolet Blazer

Transmission parameters

The Chevrolet Blazer has 13 transmission parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Clutch slip, AT C3, ring BLAZER_CLU_SLIP_C3_RINGConfirmed

  • Request22 19 D4
  • Service 22DID 19D4
  • Module7E2 → 7EA
  • Every1 s
  • Testing for 1988 to 2012, 2019 to 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Blazer.

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

0x0000 = 0 → (0 ÷ 4) = 0 rpm

Formula
(val ÷ 4)
Range
-8192 to 8191 rpm
Unit
rpm

Confirmed for 2022. In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026.

  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.

Clutch slip, AT C1, ring BLAZER_CLU_SLIP_C1_RING

  • Request22 28 51
  • Service 22DID 2851
  • Module7E2 → 7EA
  • Every1 s
  • Testing

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

Formula
(val ÷ 4)
Range
-8192 to 8191 rpm
Unit
rpm

In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026. Not supported for 2022.

Clutch slip, AT C3, ring BLAZER_CLU_SLIP_C3_RINGConfirmed

  • Request22 19 D4
  • Service 22DID 19D4
  • Module7E2 → 7EA
  • Every1 s
  • Testing for 1988 to 2012, 2019 to 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Blazer.

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

0x0000 = 0 → (0 ÷ 4) = 0 rpm

Formula
(val ÷ 4)
Range
-8192 to 8191 rpm
Unit
rpm

Confirmed for 2022. In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026.

Current gear BLAZER_CURRENT_GEARConfirmed

  • Request22 1B 30
  • Service 22DID 1B30
  • Module7E2 → 7EA
  • Every250 ms
  • Testing for 1988 to 2012, 2019 to 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Blazer.

Bits 0 to 7 of the reply, 8 bits.

0x01 = 1 → (1 − 3) = -2

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

Confirmed for 2022. In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026.

Current gear BLAZER_CURRENT_GEAR_7E0

  • Request22 19 9A
  • 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 1988 to 2012, 2019 to 2021, 2023 to 2026. Not supported for 2022.

Current gear BLAZER_CURRENT_GEAR_DA18

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

Bits 0 to 7 of the reply, 8 bits.

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

In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026. Not supported for 2022.

Current gear, variant 2 BLAZER_CURRENT_GEAR_VAR_2Confirmed

  • Request22 19 9A
  • Service 22DID 199A
  • Module7E2 → 7EA
  • Every250 ms
  • Testing for 1988 to 2012, 2019 to 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Blazer.

Bits 0 to 7 of the reply, 8 bits.

0x01 = 1 → 1

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2022. In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026.

Current gear, variant 3 BLAZER_CURRENT_GEAR_VAR_3Confirmed

  • Request22 32 01
  • Service 22DID 3201
  • Module7E0 → 7E8
  • Every250 ms
  • Testing for 1988 to 2012, 2019 to 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Blazer.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → 0

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2022. In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026.

Gear ratio BLAZER_GEAR_RAT

  • Request22 19 A1
  • Service 22DID 19A1
  • Module7E4 → 7EC
  • Every250 ms
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026. Not supported for 2022.

Transmission fluid temperature BLAZER_TFT

Pelican can show this parameter as the transmission fluid temperature.

  • Request22 19 40
  • Service 22DID 1940
  • ModuleDA18 → 2AF118
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

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

In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026. Not supported for 2022.

Transmission fluid temperature, filtered BLAZER_TF_T_FLTEDConfirmed

  • Request22 29 5A
  • Service 22DID 295A
  • Module7E2 → 7EA
  • Every5 s
  • Testing for 1988 to 2012, 2019 to 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Blazer.

Bits 0 to 7 of the reply, 8 bits.

0x55 = 85 → (85 − 40) = 45 °C

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

Confirmed for 2022. In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026.

Transmission fluid temperature, filtered BLAZER_TF_T_FLTED_DA18

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

Bits 0 to 7 of the reply, 8 bits.

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

In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026. Not supported for 2022.

Transmission input shaft speed BLAZER_TRANS_INPUT_SHFT_SPD

  • Request22 19 41
  • Service 22DID 1941
  • Module7E4 → 7EC
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255 rpm
Unit
rpm

In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026. Not supported for 2022.

Transmission input shaft speed, 2 BLAZER_TRANS_ISSConfirmed

  • Request22 19 41
  • Service 22DID 1941
  • Module7E2 → 7EA
  • Every1 s
  • Testing for 1988 to 2012, 2019 to 2021, 2023 to 2026

Example reply from a 2022 Chevrolet Blazer.

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

0x0000 = 0 → (0 ÷ 4) = 0 rpm

Formula
(val ÷ 4)
Range
-8192 to 8191 rpm
Unit
rpm

Confirmed for 2022. In testing for 1988 to 2012, 2019 to 2021, 2023 to 2026.

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