TSB N252521591 — Cadillac, Chevrolet and GMC Service campaign
N252521591 is a service campaign on file with NHTSA for 4 Cadillac, Chevrolet and GMC models, 2026 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Certain vehicles listed above may have a condition in which hard braking may unexpectedly engage. Dealers will reprogram the Image Processing Module.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. N252521591 is filed as a service campaign, 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 N252521591 names
| Vehicle | Model years |
|---|---|
| Cadillac Escalade | 2026 |
| Chevrolet Suburban | 2026 |
| Chevrolet Tahoe | 2026 |
| GMC Yukon | 2026 |
Every document filed under N252521591
| Document ID | Filed | Type |
|---|---|---|
| N252521591 | November 19, 2025 | Service campaign |
Questions buyers ask
What is TSB N252521591?
N252521591 is a service campaign filed with NHTSA by Cadillac, Chevrolet and GMC, covering 4 Cadillac, Chevrolet and GMC models across the 2026 model years. NHTSA's summary reads: Certain vehicles listed above may have a condition in which hard braking may unexpectedly engage. Dealers will reprogram the Image Processing Module.
Which vehicles does N252521591 cover?
NHTSA's file names Cadillac Escalade (2026); Chevrolet Suburban (2026); Chevrolet Tahoe (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 N252521591 a recall, and is the repair free?
N252521591 is filed as a service campaign, 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 N252521591?
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 N252521591, 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 N252521591. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.