TSB N252494770-01 — Buick, Cadillac, Chevrolet and GMC Service campaign
N252494770-01 is a service campaign on file with NHTSA for 28 Buick, Cadillac, Chevrolet and GMC models, 2018–2025 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. N252494770-01 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 N252494770-01 names
Every document filed under N252494770-01
| Document ID | Filed | Type |
|---|---|---|
| N252494770-01 | June 20, 2025 | Service campaign |
Questions buyers ask
What is TSB N252494770-01?
N252494770-01 is a service campaign filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 28 Buick, Cadillac, Chevrolet and GMC models across the 2018–2025 model years. NHTSA's summary reads: Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an opportunity to submit a written notice to GM before filing a lawsuit seeking a vehicle repurchase. If such a notice is not provided to GM, then the vehicle owner is prevented from…
Which vehicles does N252494770-01 cover?
NHTSA's file names Buick Enclave (2018–2025); Buick LaCrosse (2018–2019); Cadillac CTS (2018–2019); Cadillac Escalade (2018–2025); Chevrolet Blazer (2019–2025); Chevrolet Bolt EV (2018–2023); Chevrolet Camaro (2018–2024); Chevrolet Colorado (2018–2025); Chevrolet Corvette (2018–2025); Chevrolet Cruze (2018–2019), and 18 more vehicles listed on this page. 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 N252494770-01 a recall, and is the repair free?
N252494770-01 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 N252494770-01?
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 N252494770-01, 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 N252494770-01. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.