TSB PIC6548B — Chevrolet Service bulletin
PIC6548B is a service bulletin on file with NHTSA for 2 Chevrolet models, 2021–2026 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. 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.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIC6548B names
| Vehicle | Model years |
|---|---|
| Chevrolet Trailblazer | 2021, 2022, 2023, 2024, 2025, 2026 |
| Chevrolet Trax | 2024, 2025, 2026 |
Every document filed under PIC6548B
| Document ID | Filed | Type |
|---|---|---|
| PIC6548B | July 23, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIC6548B?
PIC6548B is a service bulletin filed with NHTSA by Chevrolet, covering 2 Chevrolet models across the 2021–2026 model years. NHTSA's summary reads: 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.
Which vehicles does PIC6548B cover?
NHTSA's file names Chevrolet Trailblazer (2021–2026); Chevrolet Trax (2024–2026). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB PIC6548B a recall, and is the repair free?
No. PIC6548B is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of PIC6548B?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under PIC6548B, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under PIC6548B. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.