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Service bulletin 21-NA-142

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 id10219288
Published by NHTSA2022-09-07
Manufacturer's number21-NA-142
Manufacturer's date2022-08-23
NHTSA componentSERVICE BRAKES

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

Brakes

Vehicles listed
BUICK ENCLAVE2020, 2021, 2022, 2023
CADILLAC XT52021, 2022, 2023
CADILLAC XT62021, 2022, 2023
CHEVROLET BLAZER2021, 2022, 2023
CHEVROLET COLORADO2021, 2022
CHEVROLET TRAVERSE2020, 2021, 2022, 2023
GMC ACADIA2021, 2022, 2023
GMC CANYON2021, 2022

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

Recalls for the same vehicles and component
22V3920002022-06-02. SERVICE BRAKES, HYDRAULIC:FLUID

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-0742025-05-02. Service bulletin. This service bulletin provides a procedure to add deadener to the batter tray bracket to correct customer concerns of a Service Engine Soon (SES), Reduced Power, Service Brake, Reduced Steering and/or Stabilitrak Message Illuminated on DIC, multiple DTCs.
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
24-NA-0482025-02-17. Service bulletin. This service bulletin provides customer information for rear unwanted automatic braking, usually when reversing out of a garage or driveway.
21-NA-0432025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
21-NA-1422025-01-18. Service bulletin. This technical bulletin provides repair information to correct a customer concern of hearing front brake grind/groan noise after sitting overnight.
17-NA-2712024-12-19. Service bulletin. This service bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customer concern of wheel clicking.
PIT5696H2024-12-12. Service bulletin. This preliminary information discusses potential for a code C0010.5A to store in the brake controller which appears to be setting falsely or is induced by the customer.
21-NA-0432024-12-10. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
PIT5509L2024-09-11. Service bulletin. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System” message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
22-NA-2442024-05-30. Warranty extension. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.