2020 GMC Sierra Denali recalls and problems
No recalls and 11 owner complaints on file with NHTSA for the 2020 GMC Sierra Denali.
Recalls apply to specific production ranges. To see whether a particular car still has an open recall, enter its VIN at nhtsa.gov/recalls. Repairs for safety recalls are free at authorised dealers.
2020 GMC Sierra Denali recalls
NHTSA lists no recalls for this model year.
Most reported problems
Areas named in owner complaints to NHTSA. One complaint can name several areas.
What owners report
Recent complaints filed with NHTSA, shortened. These are unverified accounts from owners, not findings.
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…
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…
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…
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…
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…
Sierra Denali model years compared
Across all years, the 2016 Sierra Denali has the most complaints (30). All GMC Sierra Denali years →
Questions
- Does the 2020 GMC Sierra Denali have any recalls?
- NHTSA lists no recalls for the 2020 GMC Sierra Denali as of October 27, 2026.
- What are the most common problems with the 2020 GMC Sierra Denali?
- Owners have filed 11 complaints with NHTSA. The most frequently reported area is engine (6 complaints), followed by forward collision avoidance (2).
- How many 2020 GMC Sierra Denali complaints mention a crash or fire?
- 0 of 11 complaints report a crash and 0 a fire; 0 injuries were reported in total. Complaints are unverified reports from owners.
Source: NHTSA recall and complaint data, updated October 27, 2026. Latest complaint received September 14, 2026.