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Service bulletin PIT6534

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 id11036395
Published by NHTSA2026-08-27
Manufacturer's numberPIT6534
Manufacturer's date2026-08-18
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

Onstar connectivity features may be inoperative. Dealer is instructed how to reset the onstar module. Engineering is investigating a solution.

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 ENCLAVE2027
CADILLAC LYRIQ2027
CADILLAC OPTIQ2027
CADILLAC VISTIQ2027
CHEVROLET BLAZER EV2027 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CORVETTE GRAND SPORT CONVERTIBLE2027 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CORVETTE GRAND SPORT COUPE2027 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CORVETTE GRAND SPORT X CONVERTIBLE HYBRID2027 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CORVETTE GRAND SPORT X COUPE HYBRID2027 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EQUINOX2027
CHEVROLET EQUINOX EV2027 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TRAVERSE2027
GMC ACADIA2027
GMC TERRAIN2027

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