The 2021 GMC Sierra 2500 has 6 recalls, the most serious being a brake system fire risk and a transmission defect on diesel-equipped trucks where the rear wheels can lock up without warning, raising the risk of a crash.
Two recalls affect seatbelts in the front-row center seating position: in one case, the bracket anchoring the belt may not be secured to the seat frame, and in another, incorrect bolts may have been used to attach the belt assembly to the vehicle. Either condition can prevent the belt from properly restraining an occupant in a crash. On the tire side, certain trucks equipped with a 17-inch spare tire used alongside 18- or 20-inch road tires can confuse the anti-lock brake system, preventing it from independently controlling the rear wheels during hard braking. There is also a tailgate concern on trucks with power-unlatching tailgates: water can short-circuit the electronic release switch and cause the tailgate to open on its own, potentially dropping cargo onto the road.
At a glance
What can fail
The transmission control valve may fail, causing the rear wheels to lock up unexpectedly.
What the fix does
Dealers will install updated transmission control module software and repair or replace defective control valves as needed.
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Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Water can get inside the tailgate's electronic release switch and cause it to short circuit, making the tailgate unlatch on its own while parked.
What the fix does
Dealers will replace the exterior touchpad switch assembly at no cost to fix the electrical short and prevent unintended unlatching.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Bolts securing the brake pressure modulator valve assembly may not be tight enough, allowing water to enter and potentially causing brake system failure.
What the fix does
Dealers will replace the brake pressure modulator valve assembly at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The 17-inch spare tire installed on these vehicles may not work properly with the 20-inch or 18-inch road tires, which can prevent the anti-lock braking system from functioning.
What the fix does
Dealers will install the correct spare tire and attach an updated spare tire information label at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Seat belt fastening bolts may be incorrect, causing seat belts to not attach properly to the vehicle.
What the fix does
Dealers will replace the suspect bolts with correct ones at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The seat belt brackets in the front-row center seating position may not be properly secured to the seat frame, reducing their ability to restrain occupants.
What the fix does
Dealers will inspect the seat belt bracket attachments on both sides and reassemble them correctly if needed, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
