GMC sensing diagnostic module (SDM) that senses a crash and deploys the necessary air bags may not power down correctly when the vehicle is shut off, causing it to be inoperative when the vehicle is restarted.
The short version
General Motors LLC reported a problem with the air bags air bag/restraint control module. Here is what owners need to know.
The sensing diagnostic module (SDM) that senses a crash and deploys the necessary air bags may not power down correctly when the vehicle is shut off, causing it to be inoperative when the vehicle is restarted.
If the SDM becomes inoperative, it will not detect a crash or command the necessary air bag deployment, increasing the risk of injury in the event of a crash.
GM will notify owners, and dealers will reprogram the SDM with updated software, free of charge.
Affected vehicles
These model years are included in NHTSA campaign 18V-340.
| YEAR RANGE | MODEL |
|---|---|
| 2018 | GMC Terrain |
What changed
Newest first. The record shows both when the recall began and what has changed since.
- Recall reported to NHTSA. LATEST
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Check your VINWhat this record means
Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.
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