TSB 654.50 — Buick, Cadillac, Chevrolet and GMC Software update
654.50 is a software update on file with NHTSA for 7 Buick, Cadillac, Chevrolet and GMC models, 2025 model years, filed and re-filed as 2 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. • Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features. During the update process, your radio may stay on up to 5…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. 654.50 is filed as a software update, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years 654.50 names
| Vehicle | Model years |
|---|---|
| Buick Enclave | 2025 |
| Cadillac Escalade | 2025 |
| Chevrolet Suburban | 2025 |
| Chevrolet Tahoe | 2025 |
| Chevrolet Traverse | 2025 |
| GMC Acadia | 2025 |
| GMC Yukon | 2025 |
Every document filed under 654.50
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| 654.50 | January 30, 2026 | Software update |
| 654.50 | December 12, 2025 | Software update |
Questions buyers ask
What is TSB 654.50?
654.50 is a software update filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 7 Buick, Cadillac, Chevrolet and GMC models across the 2025 model years. NHTSA's summary reads: • Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features. During the update process, your radio may stay on up to 5…
Which vehicles does 654.50 cover?
NHTSA's file names Buick Enclave (2025); Cadillac Escalade (2025); Chevrolet Suburban (2025); Chevrolet Tahoe (2025); Chevrolet Traverse (2025); GMC Acadia (2025); GMC Yukon (2025). 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 654.50 a recall, and is the repair free?
654.50 is filed as a software update, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of 654.50?
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 654.50, 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 654.50. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.