2019 GMC Sierra Denali problems
The 2019 GMC Sierra Denali has 46 complaints on file with NHTSA. The largest share (17%) concerns brakes. Next are steering (15%) and electrical system (11%).
At a glance
- Complaints
- 46 filed with NHTSA
- Most reported
- Brakes 17% of complaints
- Crashes and fires
- 0 and 0
- Injuries and deaths
- 1 and 0
- Typical mileage
- 5,000 miles 44 complaints with mileage
Source: NHTSA owner complaints
Where the complaints are
Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.
When problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 39 |
| 20k to 40k miles | 3 |
| 40k to 60k miles | 0 |
| 60k to 80k miles | 1 |
| 80k to 100k miles | 1 |
| 100k to 120k miles | 0 |
| 120k to 140k miles | 0 |
| 140k to 160k miles | 0 |
| 160k to 180k miles | 0 |
| 180k to 200k miles | 0 |
| 200k+ miles | 0 |
What the data shows
Of the 44 complaints that include odometer readings, half describe a problem before roughly 5,000 miles.
Safety-related details: 1 injury reported. Its complaints are less severe on average than those of 92% of model years in our database.
Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2019 ranks 1st most-complained-about out of 4 model years of the GMC Sierra Denali with enough data (46 complaints in that window).
What owners wrote
A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.
While truck was parked (engine was not running at all), I used the key fab remote to unlock the truck and then open the tailgate. At this time, the tailgate slammed open (very forcefully and quickly) and hit my son in the chest. This has also happened while the truck was running and in park. At that time, I (the driver) pushed the button on the center dash to open the tailgate so that my young son could put his baseball gear in the bed of the truck.
Tl* the contact owns a 2019 GMC sierra denali. While driving 55 MPH, the tonneau cover detached form the bed of the vehicle. The contact received a recall notice for NHTSA campaign number: 19e031000 (equipment) on may 11, 2019, the same day as the cover detached from the vehicle. The vehicle was not diagnosed or repaired. The dealer and manufacturer were contacted. The failure mileage was also closer to 11,500.
Brake system failure 62 MPH top speed; brake warning light; check engine light; ABS light; traction control light; steering assist is reduced - drive with care; service trailer brake system.... Lights on dash as noted above. Brake pedal makes a clicking; power steering non-existent; brakes will not stop vehicle without max pressure. Happened at low speed. Bumped into cart at store before gaining control. After multiple shut downs and restarts all lights normal except check engine light.
The contact owns a 2019 GMC Sierra Denali. The contact stated that while driving at 30 mph, a "Turn off engine, No oil pressure" message appeared and was accompanied by a warning chime alert. The vehicle was steered to the side of the road and turned off. The contact then observed condensation leaking under the front of the vehicle and condensation in the street leading to the vehicle.