2019 GMC Sierra Denali: check engine light

7 of the 26 complaints about the 2019 GMC Sierra Denali describe check engine light.

owner complaints: 7
of this car's complaints: 27%
typical mileage: 2,400
recalls: 0

Is there a fix? 153 service bulletins cover this area of the car. See below

Check engine light by model year

2020
2
2019
7
2018
1
2017
3
2016
2
2015
1
2011
1
2009
1
2006
1

What owners say

Filed Feb 14, 2020 · Electrical, Engine · 26,000 miles · TN

Engine light keeps coming on take it to the dealer I guess they reset it and now this is the 3rd time it's now back on, back up camera goes out from time to time,

Filed Feb 3, 2020 · Brakes, Driver assistance · 2,000 miles · IA

After using app to start the vehicle, I sat in the driver seat depressed the brake and pushed the start button. Immediately a warning popped up saying ESC needed service, service trailer brake, speed limited to 62mph. Additional lights illuminated including brake, traction control, ABS, and cel. Since the dash indicated that the speed was reduced I thought it would be safe to drive, however at the first turn I realized my brakes were nearly gone and I went through the intersection. The brakes appeared to have lost the boost and were extremely hard to depress making it difficult to stop the vehicle. I limped the truck home and notified the dealer. The next day I tried starting the truck and the brakes returned with no dash messages although the cel was still illuminated. There is a recall for a similar issue but it looks like my VIN is not apart of it.

Filed Jan 25, 2020 · Electrical, Steering · 970 miles · TX

On january 23rd I started the gmc via the gmc phone app and when I got in the truck pushed brake and start button and that's will gauges went crazy saying brake malfunction .steering ,speed reduced to 62 MPH and brake pedal went to floor with little to no brakes and stopped the truck turned it off and on twice before all codes cleared except now the check engine light is on . Brakes appeared to work fine after te second time of turning the truck off and on .970 miles on it!

Filed Jan 24, 2020 · Brakes, Driver assistance · 9,793 miles · OH

After starting vehicle using the mygmc app, I received the following warnings: 1. Service trailer brake system 2. Steering assist is reduced drive with care 3. Service ESC 4. Brake system failure 62 MPH top speed 5. Check engine light. Vehicle was stationary and I did not drive afterwards. Truck was in for service last week to complete recent recalls and replace a leaky rear window. When I pick the truck up, I noticed the lane keep assist, lane departure warning, intellibeam headlight, forward collision alert, and other functions associated with the window mounted camera system were inoperable. I have an appointment already scheduled for that and will add this for the dealer to investigate. Truck was taken to dealer for recall on 1/7/2020 and I got it back on 1/18/2020 because of the window replacement.

Filed Jan 8, 2020 · Brakes, Driver assistance · 1,403 miles · SC

I started my vehicle on january 7th 2020 at about 4:00pm to return home from work I received multiple warning lights and the check engine light went on. The warns read "break system failure 62 MPH too speed", "service ESC", "steering assist is reduced drive with care", "service trailer break system". The vehicle would not break properly I would estimate the breaking capacity at 30% from normal. I turned off the vehicle and restarted it about 5 minutes later, all warnings were gone but the check engine light was still luminated, the vehicles performance was reduced and breaking was at about 80% of the normal capacity. I have made an appointment with the dealer for imidiate service I slowly and carefully drove the vehicle home. The vehicle has approximately 1403 miles on it.

Filed Jan 8, 2020 · Brakes, Driver assistance · 6,038 miles · FL

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. Brakes occasionally makes clicking sound without touching them. Mileage 6056

Filed Dec 28, 2019 · Brakes, Driver assistance · 2,400 miles · TX

The vehicle was in for replacement back up camera module and the dealer stated that the fix for the active brake system failure recall was completed. After starting the vehicle in a parking lot, several messages displayed in the driver information center: brake system failure 62 MPH top speed, service ESC, service trailer brake system, service brake assist. Additionally, several warning lights for the ABS, parking brake, tcs, check engine light, etc were illuminated. After acknowledging the messages, I placed the vehicle in reverse and noticed that the brakes needed to be pressed with full weight on them to get the vehicle to stop. I placed the vehicle in drive to park back in space and the same issue with the brakes persisted. I turned the vehicle on and off 4 times and the messages finally stopped displaying and the brakes appeared to work as they normally should, although the check engine light remained lit. The vehicle was driven to the dealership and no resolution has been given for the issue to date.