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Service bulletin PIC6548B

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 id11035349
Published by NHTSA2026-07-30
Manufacturer's numberPIC6548B
Manufacturer's date2026-07-23
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This Preliminary information communicates to the technician the direction needed when encountering an issue with switching between adaptive cruise control and regular cruise control or an issue with automatic high beam feature after the front camera was replaced.

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
BUICK ENCORE GX2020, 2021, 2022, 2023, 2024, 2025, 2026
BUICK ENVISTA2024, 2025, 2026
CHEVROLET TRAILBLAZER2021, 2022, 2023, 2024, 2025, 2026
CHEVROLET TRAX2024, 2025, 2026

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