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Service bulletin PIT6452

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 id11025577
Published by NHTSA2025-11-17
Manufacturer's numberPIT6452
Manufacturer's date2025-11-12
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This is a diagnostic PI to assist on a repair to fix a concern for the HVAC temperature doors binding at times

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
CADILLAC ESCALADE2025, 2026
CADILLAC ESCALADE ESV2025, 2026
CHEVROLET SILVERADO 15002025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN 15002025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2025, 2026
GMC SIERRA 15002025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2025, 2026
GMC YUKON XL2025, 2026

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