2021 GMC Sierra 1500 Recalls & Complaints

The 2021 GMC Sierra 1500 has 7 recalls, the most serious being a transmission valve defect on diesel-equipped trucks that can cause the rear wheels to lock up without warning, raising the risk of a crash.

On the engine side, trucks with the 6.2L V8 gas engine may have defective connecting rod or crankshaft components that can cause sudden engine failure while driving. Two recalls address seatbelt attachment problems: incorrect bolts may have been used to secure seatbelt assemblies to the vehicle structure, and separately, the seatbelt bracket at the front-row center seating position may not be properly secured to the seat frame. In either case, the belt may not hold an occupant in a crash. There are also two tire concerns: certain Continental tires may have been overcured during production, which can cause a sidewall break or tread separation and sudden air loss. On trucks equipped with accessory road wheels and a 17-inch spare, the spare is not compatible with those wheels and can cause the anti-lock brake system to stop working properly under hard braking.