Listed by Transport Canada for this model year
14Possible recalls
16 United States (NHTSA) records, shown separately below
14
Recalls
Feb 11, 2026
Most recent

Newest first. Many cover only part of a model year, so check your VIN with GMC before booking a repair.

Transport Canada · listed for this model year

Issue: On certain vehicles, the recall repairs completed by a General Motors dealer during recall N242454440 (Transport Canada recall no. 2024-637) may not have been done correctly. As a result, a second repair is required. Over time, the transmission control valve could wear and lose pressure. If this happens, the transmission could shift harshly and could cause the rear wheels to lock up. Note: This recall only affects vehicles equipped with a diesel engine. Safety Risk: Rear wheels that lock suddenly could cause a loss of control and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and advise you to take your vehicle to a dealership to update the transmission control module software to detect excess wear in advance of a wheel lock up. If detected, a service engine light would turn on, a message would display in the instrument panel and the vehicle would be limited to fifth gear.

2026060 · 46 units in campaign · Transport Canada

Applies only if the manufacturer confirms your VIN · repair by an authorized dealer

Issue: Over time, the transmission control valve could wear and lose pressure. If this happens, the transmission could shift harshly and could cause the rear wheels to lock up. Note: This recall only affects vehicles equipped with a diesel engine. Safety Risk: Rear wheels that lock suddenly could cause a loss of control and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and advise you to take your vehicle to a dealership to update the transmission control module software to detect excess wear in advance of a wheel lock up. If detected, a service engine light would turn on, a message would display in the instrument panel and the vehicle would be limited to fifth gear.

2024637 · 52,309 units in campaign · Transport Canada

Applies only if the manufacturer confirms your VIN · repair by an authorized dealer

Issue: On certain trucks, water could leak into the exterior tailgate switch. As a result, the tailgate could unlatch and open unexpectedly while parked. If this happens, cargo that is not secured could fall out of the truck bed and onto the road when the vehicle is moving. Note: This recall only affects trucks equipped with a power-locking tailgate. Safety Risk: Cargo that falls from the truck bed could create a road hazard for others and increase the risk of a crash. Corrective Actions: General Motors will notify owners by mail and advise you to take your truck to a dealership to replace the exterior tailgate switch. To reduce the safety risk, General Motors recommends that you should inspect the tailgate to ensure it's closed and latched before driving.

2024061 · 249,132 units in campaign · Transport Canada

Applies only if the manufacturer confirms your VIN · repair by an authorized dealer

United States records (NHTSA) · 16

These are NHTSA campaigns for 2020 GMC Sierra vehicles sold in the United States. They are not Canadian recalls: NHTSA's VIN lookup has no Canadian data, and a US campaign may have no Canadian counterpart, or one under a different number covering different vehicles. For a vehicle sold in Canada, go by the Transport Canada listing above and GMC's Canadian VIN lookup.

2020 GMC Sierra recall questions

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