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Service bulletin 21NA040

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 id10199257
Published by NHTSA2021-07-19
Manufacturer's number21NA040
Manufacturer's date2021-05-05
NHTSA componentSEATS:MID/REAR ASSEMBLY; SEATS

NHTSA's summary

This technical bulletin provides a procedure to repair a condition of Squeak, Rattle or Creak Noise Originating from Second Row Seat Area by following the procedure outlined within the bulletin.

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

Seats

Vehicles listed
BUICK ENCLAVE2019, 2020, 2021
CHEVROLET TRAVERSE2019, 2020, 2021

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

Other bulletins for the same vehicles and component
24-NA-2392025-01-30. Service bulletin. This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the PicoScope.
PIT61802024-08-13. Service bulletin. This Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.
06-00-89-029V2024-05-16. Service bulletin. This service bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability.
PIE0745A2023-09-13. Service bulletin. This engineering information (EI) ends the need for gathering further information from technicians in regard to 3rd row release strap has fray marks and/or does not release to fold down the seat back.
PIE07452023-05-10. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the 3rd row release strap has fray marks and/or does not release to fold down the seat back.
21NA0402021-07-06. Service bulletin. This technical bulletin provides a procedure to repair a condition of Squeak, Rattle or Creak Noise Originating from Second Row Seat Area by following the procedure outlined within the bulletin.
PIT57452020-08-10. Service bulletin. This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.
N1922231102020-06-29. Service bulletin. Customer Satisfaction Program - On certain vehicles, equipped with the second row bench seats (RPO ABC or ABA) may have a condition in which the second row middle seat belt buckle can fall down between the second row bench seats and be damaged when one portion of the bench is moved relative to the other. Dealers will add an elastic strap, inspect the second row middle seat belt buckle and hinge cover for damage and replace if necessary.
17NA1982020-04-27. Service bulletin. This technical bulletin provides a procedure to disengage the jammed parts and release the gears for proper function caused by the mechanical of the height adjustment being jammed, not broken creating a condition of difficult to adjust the seat height and/or seat stuck mostly in lowest position.
N1922231102020-03-23. Service bulletin. Customer Satisfaction Program - On certain vehicles, equipped with the second row bench seats (RPO ABC or ABA) may have a condition in which the second row middle seat belt buckle can fall down between the second row bench seats and be damaged when one portion of the bench is moved relative to the other. Dealers will add an elastic strap, inspect the second row middle seat belt buckle and hinge cover for damage and replace if necessary.