CHEVROLET, GMC
21NA214
Manufacturer communications
- Publication date
- 2022-02-16
- Received by NHTSA
- 2022-06-21
- NHTSA record numbers
- 10214230
Manufacturer summary
Original wording in English
This technical bulletin provides repair information to correct a customer concern of Service Engine Soon Lamp being illuminated. They may also comment on multiple transmission issues including harsh or delayed shifts, slip, surge, shudder, noise, whine, growl, shake and/or vibration. As well as the exhaust brake not working or that they do not feel it. Technicians may find DTCs P2002, P2463, P2459, P144E, P0421, P0422, P0106 P20EE, P129F, P16F3, P20FF, P226D, P249D, P249E, P11CC and / or P11D5.
Reported code forms
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| Make | Model | Model year |
|---|---|---|
| Chevrolet | SILVERADO 2500 | 2020 |
| GMC | SIERRA 2500 | 2020 |