BUICK, CHEVROLET, GMC

24-NA-244

2025-04-30 · NHTSA 11019745

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

This bulletin provides a procedure to program the PCM to latest software to correct a condition of cold start rough idle w/DTC P050D.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.