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Service bulletins for the 2023 GMC Sierra

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1426 on file from NHTSA, as of 2026-10-19.

About P0299 on the 2023 GMC Sierra: what the code means, and the bulletins and recalls about the same components.

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By component

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Only bulletins with trouble code: P0299 are shown. Show all

Bulletins, newest first
23-NA-0022024-07-22. Service bulletin. ELECTRICAL SYSTEM; ENGINE. 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.
23-NA-0452023-05-04. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Engine RPO L3B P0299 Service Calibration.
PIP59052023-04-17. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. This Preliminary information communicates to the dealers information related Malfunction Indicator Lamp (MIL) illuminated in the Driver Information Center (DIC). Technicians may find DTC P0299 may be stored Current or in recent history. Technicians are advised of updated Engine Control Module Calibrations becoming available.
23-NA-0022023-02-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. 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.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.