TSB 21-NA-043 — Buick, Cadillac, Chevrolet and GMC Service bulletin
21-NA-043 is a service bulletin on file with NHTSA for 15 Buick, Cadillac, Chevrolet and GMC models, 2011–2012 model years, filed and re-filed as 3 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 21-NA-043 names
Every document filed under 21-NA-043
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 |
|---|---|---|
| 21-NA-043 | January 31, 2025 | Service bulletin |
| 21-NA-043 | November 5, 2024 | Service bulletin |
| 21-NA-043 | March 20, 2023 | Service bulletin |
What 21-NA-043 covers
Visibility & wipers, Engine, Brakes & stability, Wheels & tires, Electrical, Body & structure, and 1 other component area — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 21-NA-043?
21-NA-043 is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 15 Buick, Cadillac, Chevrolet and GMC models across the 2011–2012 model years. NHTSA's summary reads: This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
Which vehicles does 21-NA-043 cover?
NHTSA's file names Buick Enclave (2011); Cadillac CTS (2011); Chevrolet Aveo (2011–2012); Chevrolet Camaro (2011); Chevrolet Colorado (2011); Chevrolet Corvette (2011); Chevrolet Cruze (2011); Chevrolet HHR (2011); Chevrolet Impala (2011); Chevrolet Malibu (2011), and 5 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 21-NA-043 a recall, and is the repair free?
No. 21-NA-043 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 21-NA-043?
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 21-NA-043, 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 21-NA-043. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.