2020 GMC Sierra Denali Recalls, Problems & Safety Rating

2020 GMC Sierra Denali recalls

No safety recalls on file for the 2020 GMC Sierra Denali.

Most common 2020 GMC Sierra Denali problems

Problem areas named in the 11 complaints owners filed with NHTSA.

Problem area	Reports
Engine	6
Service Brakes	2
Forward Collision Avoidance	2
Electrical System	1
Engine And Engine Cooling	1

What owners report

2026-09-14, Forward Collision Avoidance
The contact owns a 2020 GMC Sierra Denali. The contact stated that while driving with Adaptive Cruise Control set to 55 MPH, the vehicle suddenly accelerated. The contact depressed the brake pedal to disengage the Adaptive Cruise Control settings, preventing the vehicle from crashing into the vehicle ahead. The contact stated that the failure had occurred while the Adaptive Cruise Control was engaged. The approximate failure mileage was 99,000.

2026-09-11, Engine
The contact owned a 2020 GMC Sierra Denali. The contact stated that while the vehicle was parked, there was an abnormal knocking sound coming from the engine compartment. The check engine warning light was intermittently illuminated. The vehicle was taken to a dealer; however, the cause of the failure was not yet determined. The dealer advised the contact to purchase a new vehicle because the engine would eventually need to be replaced. The contact stated that at approximately 3,000 miles, there was an abnormal odor oil burning odor coming from the vehicle. The contact stated that the vehicle was consuming an excessive amount of engine oil and approximately 5 quarts needed to be added betwee

2026-06-16, Engine
The contact owns a 2020 GMC Sierra 1500 Denali. The contact stated that while parking the vehicle, there was an abnormal grinding sound coming from the engine. There was no warning light illuminated. The local dealer was contacted about the failure; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 98,500.

2025-11-18, Engine And Engine Cooling
The contact owns a 2020 GMC Sierra Denali. The contact stated that while stopped at a traffic light with the brake pedal depressed, the vehicle shut off unexpectedly. There was no warning light illuminated. The contact made several attempts to restart the vehicle; however, the vehicle failed to restart. Due to the failure, the vehicle was towed to the dealer where a diagnostic test was performed. The contact was later informed that the engine had seized due to engine bearing failure, and the contact was provided an estimate for a new engine. Upon investigation, the contact discovered NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling) and linked the recall to the failure. The manufa

2023-11-09, Forward Collision Avoidance
The contact owns a 2020 GMC Sierra Denali. The contact stated while driving 75 MPH, the Adaptive Cruise Control feature became inoperable. The contact stated that when the vehicle got too close to another vehicle, the Adaptive Cruise Control feature failed to activate as designed. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 6,700. The VIN was unavailable.

2020 GMC Sierra Denali questions

Does the 2020 GMC Sierra Denali have any recalls?

No. NHTSA has no safety recalls on file for the 2020 GMC Sierra Denali at this time.

What are the most common problems with the 2020 GMC Sierra Denali?

Based on 11 owner complaints filed with NHTSA, the most-reported problem areas are Engine (6), Service Brakes (2), Forward Collision Avoidance (2).

How do I check if a recall on my 2020 GMC Sierra Denali has been fixed?

Enter your 17-character VIN in our VIN recall check. It shows open recalls that have not been repaired on your specific vehicle. Recall repairs are normally free at an authorized dealer.