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Service bulletin PIT6209H

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 id11029953
Published by NHTSA2026-03-11
Manufacturer's numberPIT6209H
Manufacturer's date2026-03-02
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This PI communicates information informing dealers that Engineering is aware of the clunk noise and is currently investigating a root cause.

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 CORVETTE2024, 2025
CHEVROLET SILVERADO 15002023, 2024, 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)
CHEVROLET SUBURBAN 15002022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2022, 2023, 2024
GMC HUMMER EV PICKUP2022, 2023, 2024
GMC HUMMER EV SUV2024, 2025
GMC SIERRA 15002022, 2023, 2024, 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)
GMC YUKON2022, 2023, 2024
GMC YUKON XL2022, 2023, 2024

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