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Chevrolet Bolt EV

Transmission parameters

The Chevrolet Bolt EV has 18 transmission parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Shifter position indicator BOLT_SHIFTER_POSConfirmed

  • Request22 1B 1A
  • Service 22DID 1B1A
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x77 = 119 → (119 − 146) = -27

Formula
(val − 146)
Range
-146 to 109
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

  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.

Shifter position indicator BOLT_SHIFTER_POSConfirmed

  • Request22 1B 1A
  • Service 22DID 1B1A
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x77 = 119 → (119 − 146) = -27

Formula
(val − 146)
Range
-146 to 109
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter X position sensor 1 duty cycle BOLT_SHIFTER_X_POS_SENS_1Confirmed

  • Request22 1B 1B
  • Service 22DID 1B1B
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x7C = 124 → 124

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter X position sensor 1 frequency BOLT_SHIFTER_X_POS_SENS_1_FREQUENCYConfirmed

  • Request22 1B 1F
  • Service 22DID 1B1F
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x64 = 100 → 100

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter X position sensor 2 duty cycle BOLT_SHIFTER_X_POS_SENS_2Confirmed

  • Request22 1B 1D
  • Service 22DID 1B1D
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x85 = 133 → 133

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter X position sensor 2 frequency BOLT_SHIFTER_X_POS_SENS_2_FREQUENCYConfirmed

  • Request22 1B 21
  • Service 22DID 1B21
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x64 = 100 → 100

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter Y position sensor 1 duty cycle BOLT_SHIFTER_Y_POS_SENS_1Confirmed

  • Request22 1B 1C
  • Service 22DID 1B1C
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x97 = 151 → 151

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter Y position sensor 1 frequency BOLT_SHIFTER_Y_POS_SENS_1_FREQUENCYConfirmed

  • Request22 1B 20
  • Service 22DID 1B20
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x64 = 100 → 100

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter Y position sensor 2 duty cycle BOLT_SHIFTER_Y_POS_SENS_2Confirmed

  • Request22 1B 1E
  • Service 22DID 1B1E
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x6A = 106 → 106

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Shifter Y position sensor 2 frequency BOLT_SHIFTER_Y_POS_SENS_2_FREQUENCYConfirmed

  • Request22 1B 22
  • Service 22DID 1B22
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x64 = 100 → 100

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Transmission fluid pump, auxiliary BOLT_TRANS_FLUID_PMP_AUXConfirmed

  • Request22 2C 05
  • Service 22DID 2C05
  • Module7E1 → 7E9
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2022, 2024 to 2026

Example reply from a 2023 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → (0 × 20 ÷ 51) = 0 %

Formula
(val × 20 ÷ 51)
Range
0 to 100 %
Unit
%

Confirmed for 2017, 2020, 2023. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026.

Transmission fluid temperature BOLT_ATF_TConfirmed

  • Request22 19 40
  • Service 22DID 1940
  • Module7E1 → 7E9
  • Every5 s
  • Testing for 2018 to 2019, 2021 to 2022, 2024 to 2026

Example reply from a 2023 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x40 = 64 → (64 − 40) = 24 °C

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

Confirmed for 2017, 2020, 2023. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026.

Transmission gear position BOLT_TRANS_GEAR_POSConfirmed

  • Request22 28 89
  • Service 22DID 2889
  • Module7E1 → 7E9
  • Every250 ms
  • Testing for 2018 to 2019, 2021 to 2022, 2024 to 2026

Example reply from a 2023 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0x02 = 2 → 2

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020, 2023. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026.

Transmission park position switch 1 BOLT_TRANS_PARK_POS_1Confirmed

  • Request22 1B 23
  • Service 22DID 1B23
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0xA3 = 163 → 163

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Transmission park position switch 2 BOLT_TRANS_PARK_POS_2Confirmed

  • Request22 1B 24
  • Service 22DID 1B24
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0xA3 = 163 → 163

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Transmission RPM BOLT_TRANS_RPMConfirmed

  • Request22 19 42
  • Service 22DID 1942
  • Module7E1 → 7E9
  • Every250 ms
  • Testing for 2018 to 2019, 2021 to 2022, 2024 to 2026

Example reply from a 2023 Chevrolet Bolt EV.

Bits 0 to 15 of the reply, 16 bits.

0x0000 = 0 → (0 ÷ 8) = 0 rpm

Formula
(val ÷ 8)
Range
0 to 8191 rpm
Unit
rpm

Confirmed for 2017, 2020, 2023. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026.

Transmission shift interlock switch 1 BOLT_TRANS_SHIFT_1Confirmed

  • Request22 1B 25
  • Service 22DID 1B25
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0xC3 = 195 → 195

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Transmission shift interlock switch 2 BOLT_TRANS_SHIFT_2Confirmed

  • Request22 1B 26
  • Service 22DID 1B26
  • Module7E3 → 7EB
  • Every1 s
  • Testing for 2018 to 2019, 2021 to 2026

Example reply from a 2020 Chevrolet Bolt EV.

Bits 0 to 7 of the reply, 8 bits.

0xC3 = 195 → 195

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2017, 2020. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026. Not supported for 2023.

Transmission torque requested BOLT_TRANS_TQ_REQConfirmed

  • Request22 28 8A
  • Service 22DID 288A
  • Module7E1 → 7E9
  • Every250 ms
  • Testing for 2018 to 2019, 2021 to 2022, 2024 to 2026

Example reply from a 2023 Chevrolet Bolt EV.

Bits 0 to 15 of the reply, 16 bits.

0x5763 = 22371 → (22371 − 22534) = -163 N·m

Formula
(val − 22534)
Range
-22534 to 43001 N·m
Unit
N·m

Confirmed for 2017, 2020, 2023. In testing for 2018 to 2019, 2021 to 2022, 2024 to 2026.

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