Safety Score
97
Safe
Recalls
0
Complaints
18
NCAP Stars
—
Recalls (0)
No recalls found for the 2021 GMC Sierra 3500.
Owner Complaints (showing up to 50)
| Date | Component | Crash | Injuries | Summary |
|---|---|---|---|---|
| 2025-11-21 | POWER TRAIN | No | 0 | During takeoff the transmission acted as if it was in neutral while I was crossing traffic luckily, the semi truck that… |
| 2025-09-01 | ELECTRICAL SYSTEM | No | 0 | The contact owns a 2021 GMC Sierra 3500. The contact stated that while his wife had the vehicle idling with the rear de… |
| 2025-07-14 | BACK OVER PREVENTION | No | 0 | The contact owns a 2021 GMC Sierra 3500. The contact stated that while reversing, the back over prevention camera scree… |
| 2025-02-03 | UNKNOWN OR OTHER | No | 0 | Vehicle is put into park after driving. Shift to Park warning comes on while vehicle is in park. Vehicle will not shu… |
| 2024-11-10 | POWER TRAIN | No | 0 | The contact's son owns a 2021 GMC Sierra 3500 Commercial Vehicle. The contact stated while her son was driving at an un… |
| 2024-09-30 | UNKNOWN OR OTHER | No | 0 | There is a known issue with these trucks with the infotainment screen blacking out, which renders the backup cameras in… |
| 2024-08-09 | POWER TRAIN | No | 0 | While driving 55mph on a 2 lane road, pulling a 5th wheel camper, the truck transmission downshifted by itself to a low… |
| 2024-07-29 | POWER TRAIN | No | 0 | Transmission had to be replaced from the dealership. Hard shifting dealership said truck was 23 days out of warranty. I… |
| 2024-06-01 | ELECTRICAL SYSTEM | No | 0 | When carrying the electronic key in my pocket the vehicle will lock/unlock presumably due to the remote contacting othe… |
| 2024-05-16 | ENGINE | No | 0 | Multiple instances of diesel engine emissions system parts and software failure. While driving, towing or not, the DIC … |
| 2024-04-19 | SERVICE BRAKES | No | 0 | When starting the vehicle, I got a message to service the parking brake (this is the second time I’ve had this warning … |
| 2022-02-24 | FUEL/PROPULSION SYSTEM | No | 0 | Part Number: 85138746 - DEF tank assembly, heater, pump, reservoir. I was told there were issues with the heater and p… |
| 2022-02-24 | ENGINE | No | 0 | •The diesel exhaust fluid heater is a faulty component in the system, there is a back order on the part with no ETA • M… |
| 2022-01-03 | STRUCTURE:BODY | No | 0 | Tailgate falls open while traveling down the road |
| 2021-12-10 | ENGINE | No | 0 | The throttle body gets stuck wide open after the eninge gets up to operating temperature, it will give some warning wit… |
| 2021-10-26 | SERVICE BRAKES | No | 0 | The vehicle recently had a recall repaired at the dealership. I subsequently took delivery on it as a BRAND NEW UNIT, a… |
| 2021-06-10 | SERVICE BRAKES | No | 0 | Trailer brake wiring connection continually disconnectsthen reconnects some time later. Some periods of up to 10 minute… |
| 2021-02-14 | POWER TRAIN | No | 0 | Problem: Unable to shift transmission from D to another position like R, P, N due to snow/slush being on shifter. I tra… |