BUICK, CADILLAC, CHEVROLET

19NA114

2019-05-15 · NHTSA 10161902, 10161925

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 informational bulletin provides information to the tech to test the PCV for proper performance before replacing the camshaft cover to correct a MIL On w/DTC P0171.

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.