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Service bulletin 21NA142

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 id10214224
Published by NHTSA2022-06-21
Manufacturer's number21NA142
Manufacturer's date2022-02-02
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

This technical bulletin provides repair information to correct a customer concern of hearing front brake grind/groan noise after sitting overnight.

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.

Components

Equipment and accessories, Labels and manuals

Vehicles listed
BUICK ENCLAVE2020, 2021
CADILLAC XT52021
CADILLAC XT62021
CHEVROLET BLAZER2021
CHEVROLET COLORADO2021
CHEVROLET TRAVERSE2020, 2021
GMC ACADIA2021
GMC CANYON2021

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

Recalls for the same vehicles and component
20214092021-07-01. Label
21V4970002021-07-01. EQUIPMENT:OTHER:LABELS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
23-NA-0642024-05-02. Service bulletin. This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode, which is used to increase the 12V Battery stand time of the vehicle during transit and or long period of stand time at the dealerships.
20-NA-1322024-04-23. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
17-NA-0522024-04-23. Service bulletin. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.
PIC6486E2024-04-15. Service bulletin. This Preliminary information communicates to dealer that GM is aware of the issue and is working on a resolution.
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
21-NA-0542024-03-29. Service bulletin. This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155.
23-NA-1032024-03-29. Service bulletin. This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the GM Technical Assistance Center (TAC).
24-NA-0602024-03-29. Service bulletin. This service bulletin provides repair information to correct a customer concerns of Radio Software issues.
22-NA-0572024-03-28. Service bulletin. This technical bulletin provides a procedure replace the tappet that is located on the fuel door.
24-NA-0442024-03-19. Service bulletin. This technical bulletin provides repair information to correct a customer concern of U170 Radio Software Update.