2021 GMC Sierra 3500 recalls and problems
The 2021 GMC Sierra 3500 has 5 safety recalls and 21 owner complaints filed with NHTSA. Recall repairs are free at any GMC dealer.
Recalls may cover only some 2021 GMC Sierra 3500 vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.
2021 GMC Sierra 3500 recalls
Recall 24V-797: Power Train
Problem: General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.
Risk: Rear wheel lock-up can increase the risk of a crash.
Fix: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.
Recall 24V-060: Latches/Locks/Linkages
Problem: General Motors, LLC (GM) is recalling certain 2020-2024 Chevrolet Silverado 2500, 3500, GMC Sierra 2500 and 3500 vehicles equipped with power-unlatching tailgates. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park.
Risk: An unlatched tailgate may open while driving and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.
Fix: Owners are advised to check that the tailgate is closed and latched before driving. Dealers will replace the exterior touchpad switch assemblies, free of charge. Owner notification letters were mailed May 17, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N232426400.
Recall 21V-758: Service Brakes, Hydraulic
Problem: General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles with electronic brake control modules (EBCM) replaced during vehicle assembly. The bolts that attach the brake pressure modulator valve (BPMV) assembly may not be properly tightened, which could fail to seal the two sub-assemblies and allow water intrusion.
Risk: Water in the BPMV may cause an electrical short circuit and increase the risk of fire.
Fix: Owners are advised to park outside and away from other structures until the recall repair is completed. Dealers will replace the BPMV assembly, free of charge. Owner notification letters were mailed on October 20, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N212349181.
Recall 20V-811: Seat Belts
Problem: General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.
Risk: If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury.
Fix: GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202322230.
Recall 20V-792: Seat Belts
Problem: General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The seat belt brackets may not be secured to the seat frame in the front-row center seating position.
Risk: If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury in a crash.
Fix: GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge. The recall began January 26, 2021. Owners may contact GMC customer service at 1-800-462-8782, Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202314670.
2021 GMC Sierra 3500 problems reported by owners
| Problem area | Reports | |
|---|---|---|
| Power Train | 7 | |
| Service Brakes | 5 | |
| Electrical System | 5 | |
| Engine | 3 | |
| Unknown or Other | 3 | |
| Fuel/Propulsion System | 2 | |
| Back Over Prevention | 2 | |
| Structure | 1 | |
| Tires | 1 | |
| Visibility | 1 | |
| Visibility/Wiper | 1 |
Most reported parts
- Structure › Body — 1
- Tires › Tread/Belt — 1
- Visibility › Defroster/Defogger/Hvac System — 1
- Back Over Prevention › Warnings — 1
Typical mileage at the time of the problem: 133,000 miles (median of owner reports).
Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.
Recent 2021 GMC Sierra 3500 complaints
Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.
Other GMC Sierra 3500 years
Frequently asked questions
Does the 2021 GMC Sierra 3500 have any recalls?
Yes — NHTSA lists 5 recalls for the 2021 GMC Sierra 3500: 24V-797 (power train), 24V-060 (latches/locks/linkages), 21V-758 (service brakes, hydraulic), 20V-811 (seat belts), 20V-792 (seat belts). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.
What is the most common problem with the 2021 GMC Sierra 3500?
Owners report power train problems most often (7 reports), followed by service brakes (5). The typical mileage when problems were reported is about 133,000 miles.
Are GMC recall repairs free?
Yes. Safety recall repairs are free at authorized GMC dealers, whether you are the first owner or bought the car used.