2020 GMC Sierra Denali Brakes Problems
- Complaints
- 2about this part
- Share
- 18%of 11 total for the year
- Median mileage
- 1,675miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the brakes of the 2020 GMC Sierra Denali, 18% of the 11 complaints for this model year. Where a mileage was given, the median is 1,675 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.
“Two issues broken valve spring caused engine to shut down, second service brake, brake failure light, service ESC, service trailer brake messages causing brake failure”
NHTSA complaint #11367036, filed 2020-10, 350 milesRelated service bulletins
- 11017173Mar 21, 2025This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11013242Jan 17, 2025This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector.
- 11011709Nov 5, 2024This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11000550May 3, 2024This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
- 10242252Aug 18, 2023This technical bulletin provides information and a solution to a condition of Brake Pedal Moves or Self Applies at Full Turns.
Brakes: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 2 | 18% |
| 2019 | 8 | 31% |
| 2018 | 4 | 24% |
| 2016 | 8 | 27% |
| 2015 | 7 | 32% |
| 2014 | 4 | 29% |
| 2012 | 2 | 20% |
| 2008 | 1 | 6% |
| 2006 | 2 | 40% |
| 2004 | 5 | 45% |
| 2002 | 10 | 77% |
Other parts of the 2020 GMC Sierra Denali
6 complaintsForward collision avoidance
2 complaintsElectrical system
1 complaintsEngine cooling
1 complaints
← All problems reported for the 2020 GMC Sierra Denali
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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