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Service bulletin PIT6507

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 id11031717
Published by NHTSA2026-04-29
Manufacturer's numberPIT6507
Manufacturer's date2026-04-20
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This PI communicates information on a SPS programming issue causing Serial Data Authentication Configuration to fail.

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 ENVISION2021
CADILLAC CT42021
CADILLAC CT52021
CADILLAC ESCALADE2021
CADILLAC ESCALADE ESV2021
CHEVROLET CORVETTE2021
CHEVROLET SUBURBAN2021
CHEVROLET SUBURBAN 15002021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2021
GMC YUKON2021
GMC YUKON XL2021

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