# P0300 on the 2021 GMC Sierra

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0300

- [11004996](https://open.wenmarpro.com/bulletins/11004996), 2024-07-22: This technical bulletin provides repair information to correct a customer concern of Charge Air Cooler \(CAC\) Icing, Check Engine Lamp Illuminated, Possible P0299, P2227, and/or P0300 DTCs Set.
- [10251355](https://open.wenmarpro.com/bulletins/10251355), 2024-03-06: This service bulletin provides a procedure to replace the valve lifter and guides to correct customer concerns of Poor Engine Performance, Engine Misfires, Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set.
- [10242298](https://open.wenmarpro.com/bulletins/10242298), 2023-09-18: This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 \- P0308 and/or P050D
- [10236318](https://open.wenmarpro.com/bulletins/10236318), 2023-05-16: This service bulletin provides a procedure to replace the valve lifter and guides to correct customer concerns of Poor Engine Performance, Engine Misfires, Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set.
- [10236164](https://open.wenmarpro.com/bulletins/10236164), 2023-05-15: This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 \- P0308 and/or P050D
- [10235766](https://open.wenmarpro.com/bulletins/10235766), 2023-05-06: This service bulletin provides a procedure to replace the valve lifter and guides to correct customer concerns of Poor Engine Performance, Engine Misfires, Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set.
- [10234209](https://open.wenmarpro.com/bulletins/10234209), 2023-04-17: This Preliminary information communicates that a vehicle may exhibit a misfire condition resulting in misfire codes P0300\-P308. Upon diagnosis it may be discovered the lifter has come apart. It is recommended to replace the lifter guide and the four lifters.
- [10232811](https://open.wenmarpro.com/bulletins/10232811), 2023-03-13: This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 \- P0308 and/or P050D
- [10231514](https://open.wenmarpro.com/bulletins/10231514), 2023-02-08: This technical bulletin provides repair information to correct a customer concern of Charge Air Cooler \(CAC\) Icing, Check Engine Lamp Illuminated, Possible P0299, P2227, and/or P0300 DTCs Set.
- [10211775](https://open.wenmarpro.com/bulletins/10211775), 2022-05-16: This Preliminary information communicates that a vehicle may exhibit a misfire condition resulting in misfire codes P0300\-P308. Upon diagnosis it may be discovered the lifter has come apart. It is recommended to replace the lifter guide and the four lifters.