2020 GMC Sierra Denali Forward collision avoidance Problems
- Complaints
- 2about this part
- Share
- 18%of 11 total for the year
- Median mileage
- 52,850miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the forward collision avoidance of the 2020 GMC Sierra Denali, 18% of the 11 complaints for this model year. Where a mileage was given, the median is 52,850 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, 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 contact stated that the failure had occurred while the Adaptive Cruise Control was engaged. The approximate failure mileage was 99,000.”
NHTSA complaint #11764047, filed 2026-09, 99,000 miles“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.”
NHTSA complaint #11554317, filed 2023-11, 6,700 milesRelated service bulletins
- 11023051May 8, 2025This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to facilitate the questions needing to be answered by the customer…
Forward collision avoidance: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 2 | 18% |
Other parts of the 2020 GMC Sierra Denali
← All problems reported for the 2020 GMC Sierra Denali
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology