TSB N252510321-01 — Cadillac, Chevrolet and GMC Service campaign
N252510321-01 is a service campaign on file with NHTSA for 6 Cadillac, Chevrolet and GMC models, 2021–2024 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. We identified an issue within SPS that prevented the correct software to be loaded to these vehicles. As a result, we have re-opened these VINs. Please perform the ECM update again which will allow the remedy software to be installed. Then, submit a new claim with a new warranty…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. N252510321-01 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 N252510321-01 names
| Vehicle | Model years |
|---|---|
| Cadillac Escalade | 2021, 2022, 2023 |
| Chevrolet Silverado 1500 | 2021, 2022, 2023, 2024 |
| Chevrolet Suburban | 2021, 2022, 2023 |
| Chevrolet Tahoe | 2021, 2022, 2023 |
| GMC Sierra 1500 | 2021, 2022, 2023, 2024 |
| GMC Yukon | 2021, 2022, 2023 |
Every document filed under N252510321-01
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 |
|---|---|---|
| N252510321-01 | September 5, 2025 | Service campaign |
| N252510321-01 | August 28, 2025 | Service campaign |
Questions buyers ask
What is TSB N252510321-01?
N252510321-01 is a service campaign filed with NHTSA by Cadillac, Chevrolet and GMC, covering 6 Cadillac, Chevrolet and GMC models across the 2021–2024 model years. NHTSA's summary reads: We identified an issue within SPS that prevented the correct software to be loaded to these vehicles. As a result, we have re-opened these VINs. Please perform the ECM update again which will allow the remedy software to be installed. Then, submit a new claim with a new warranty…
Which vehicles does N252510321-01 cover?
NHTSA's file names Cadillac Escalade (2021–2023); Chevrolet Silverado 1500 (2021–2024); Chevrolet Suburban (2021–2023); Chevrolet Tahoe (2021–2023); GMC Sierra 1500 (2021–2024); GMC Yukon (2021–2023). 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 N252510321-01 a recall, and is the repair free?
N252510321-01 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 N252510321-01?
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 N252510321-01, 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 N252510321-01. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.