TSB PIC6660 — Chevrolet Service bulletin
PIC6660 is a service bulletin on file with NHTSA for 2 Chevrolet models, 2024–2026 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 repairs direction for addressing a customer concern of no airflow from dash vents when using air conditioning after an extended drive time.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIC6660 names
| Vehicle | Model years |
|---|---|
| Chevrolet Trailblazer | 2024, 2025, 2026 |
| Chevrolet Trax | 2024, 2025, 2026 |
Every document filed under PIC6660
| Document ID | Filed | Type |
|---|---|---|
| PIC6660 | August 19, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIC6660?
PIC6660 is a service bulletin filed with NHTSA by Chevrolet, covering 2 Chevrolet models across the 2024–2026 model years. NHTSA's summary reads: This Preliminary information communicates to the technician the repairs direction for addressing a customer concern of no airflow from dash vents when using air conditioning after an extended drive time.
Which vehicles does PIC6660 cover?
NHTSA's file names Chevrolet Trailblazer (2024–2026); 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 PIC6660 a recall, and is the repair free?
No. PIC6660 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 PIC6660?
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 PIC6660, 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 PIC6660. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.