TSB N232433890 — Buick, Chevrolet and GMC Service campaign
N232433890 is a service campaign on file with NHTSA for 6 Buick, Chevrolet and GMC models, 2023–2024 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Customer Satisfaction Program - Various vehicle makes and models listed may have a condition in which the transmission case leaks fluid due to porosity around a mount bolt hole. Dealers will replace the transmission case.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. N232433890 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 N232433890 names
| Vehicle | Model years |
|---|---|
| Buick Enclave | 2024 |
| Chevrolet Blazer | 2023, 2024 |
| Chevrolet Trailblazer | 2024 |
| Chevrolet Traverse | 2023 |
| GMC Acadia | 2023 |
| GMC Terrain | 2024 |
Every document filed under N232433890
| Document ID | Filed | Type |
|---|---|---|
| N232433890 | May 16, 2024 | Service campaign |
What N232433890 covers
Fuel system, Engine, Transmission & drivetrain — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB N232433890?
N232433890 is a service campaign filed with NHTSA by Buick, Chevrolet and GMC, covering 6 Buick, Chevrolet and GMC models across the 2023–2024 model years. NHTSA's summary reads: Customer Satisfaction Program - Various vehicle makes and models listed may have a condition in which the transmission case leaks fluid due to porosity around a mount bolt hole. Dealers will replace the transmission case.
Which vehicles does N232433890 cover?
NHTSA's file names Buick Enclave (2024); Chevrolet Blazer (2023–2024); Chevrolet Trailblazer (2024); Chevrolet Traverse (2023); GMC Acadia (2023); GMC Terrain (2024). 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 N232433890 a recall, and is the repair free?
N232433890 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 N232433890?
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 N232433890, 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 N232433890. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.