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Service campaign N252536560

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 campaign
NHTSA id11028819
Published by NHTSA2026-02-16
Manufacturer's numberN252536560
Manufacturer's date2026-02-16
Campaign id or software versionN252536560
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

Certain vehicles may experience water intrusion due to a hole in the cabin Pressure Relief Valve. Dealers are to seal the hole using RTV sealant.

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 SILVERADO 15002026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002026 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002026 (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.