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Service bulletin PIT6315A

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 id11027599
Published by NHTSA2026-01-13
Manufacturer's numberPIT6315A
Manufacturer's date2026-01-07
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This Preliminary information communicates information to direct the dealer or upfitter to GM Upfitter Bulletin 203 for information on installing the Universal Vehicle Module.

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
CHEVROLET BLAZER EV2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)

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