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Service bulletin PIT6383

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 id11018477
Published by NHTSA2025-05-20
Manufacturer's numberPIT6383
Manufacturer's date2025-05-13
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This preliminary information is regarding a software anomaly causing the HVAC controls to set a DTC.

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 COLORADO2024, 2025
GMC CANYON2024, 2025

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