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Service bulletin PIP6101B

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11032771
Published by NHTSA2026-05-19
Manufacturer's numberPIP6101B
Manufacturer's date2026-05-11
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

The document makes technicians aware of a valvetrain tick noise that is created by one or more soft hydraulic valve lash adjusters. The soft lash adjuster concern is due to debris from the valve rocker arm, entering into the lash adjuster. The document instructs the technician to replace all of the lash adjusters and rocker arms in the entire engine if any soft lash adjusters are found.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Vehicles listed
BUICK ENCLAVE2025, 2026
BUICK ENVISION2025, 2026
CADILLAC CT42025, 2026
CADILLAC CT52025, 2026
CADILLAC XT42025
CADILLAC XT42026
CADILLAC XT52025, 2026
CADILLAC XT62025
CADILLAC XT62026
CHEVROLET BLAZER2025, 2026
CHEVROLET COLORADO2025, 2026
CHEVROLET SILVERADO 15002025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TRAVERSE2025, 2026
GMC ACADIA2025, 2026
GMC CANYON2025, 2026
GMC SIERRA 15002025, 2026 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.