TSB PIT6533A — Buick, Cadillac, Chevrolet and GMC Service bulletin
PIT6533A is a service bulletin on file with NHTSA for 8 Buick, Cadillac, Chevrolet and GMC models, 2026–2027 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIT6533A names
| Vehicle | Model years |
|---|---|
| Buick Enclave | 2026 |
| Cadillac Escalade | 2026 |
| Chevrolet Bolt EV | 2027 |
| Chevrolet Suburban | 2026 |
| Chevrolet Tahoe | 2026 |
| Chevrolet Traverse | 2026 |
| GMC Acadia | 2026 |
| GMC Yukon | 2026 |
Every document filed under PIT6533A
| Document ID | Filed | Type |
|---|---|---|
| PIT6533A | August 14, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIT6533A?
PIT6533A is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 8 Buick, Cadillac, Chevrolet and GMC models across the 2026–2027 model years. NHTSA's summary reads: This Preliminary information communications information on a Short Range Radar software anomaly causing false / ghost left or right side object detection alerts.
Which vehicles does PIT6533A cover?
NHTSA's file names Buick Enclave (2026); Cadillac Escalade (2026); Chevrolet Bolt EV (2027); Chevrolet Suburban (2026); Chevrolet Tahoe (2026); Chevrolet Traverse (2026); GMC Acadia (2026); GMC Yukon (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 PIT6533A a recall, and is the repair free?
No. PIT6533A 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 PIT6533A?
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 PIT6533A, 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 PIT6533A. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.