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Buying a used 2021 GMC Sierra 2500? Check these 6 recalls first
The standout here is a critical brake module fire risk carrying a park-outside advisory, meaning affected trucks were told not to park indoors until repaired. A second critical recall covers diesels whose rear wheels can lock. Seat belt issues appear twice, as an unsecured center bracket and wrong bolts. Owners filed 51 unverified NHTSA complaints, including four crashes and one fire, concentrated in power train, exterior lighting, engine and brakes.
Before you buy
- Get the 17-character VIN from the seller and run it at nhtsa.gov/recalls. It shows which recalls are still unrepaired on that exact car.
- Confirm in writing that the brake module fire recall repair is complete before parking the truck in a garage
- Verify the diesel rear-wheel-lock recall on the VIN
- Ask about both seat belt recalls, the center bracket and the wrong bolts, and inspect belt anchor hardware
- Open recalls are repaired free at any GMC dealer, whoever owns the car — an open recall is a to-do item, not a bill.
Recalls covering the 2021 GMC Sierra 2500
| Recall | Area | Severity |
|---|---|---|
| Chevy Silverado and GMC Sierra HD Brake Module Fire Risk · park outside | Service Brakes, Hydraulic | critical |
| Chevy, GMC and Cadillac diesels: rear wheels can lock | Power Train | critical |
| Chevy and GMC trucks: center seat belt bracket unsecured | Seat Belts | high |
| GM cars and trucks may have wrong seat belt bolts | Seat Belts | high |
| Silverado and Sierra 2500: spare tire can disable anti-lock brakes | Tires | medium |
| Chevy and GMC heavy-duty tailgate can unlatch by itself | Latches/locks/linkages | medium |
What owners have reported to NHTSA
51 complaints filed for this model year, including 4 mentioning a crash, 1 a fire and 1 injuries. Complaints are unverified owner reports, and popular models collect more of them simply because more are on the road.
| Problem area | Complaints | Recall in this area? |
|---|---|---|
| Power Train | 12 | Yes |
| Exterior Lighting | 9 | None found |
| Engine | 8 | None found |
| Brakes | 6 | Yes |
| Electrical System | 6 | None found |
| Structure | 5 | None found |