2019 GMC Sierra Denali Engine Problems
- Complaints
- 4about this part
- Share
- 15%of 26 total for the year
- Median mileage
- 6,038miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2019 GMC Sierra Denali, 15% of the 26 complaints for this model year. Where a mileage was given, the median is 6,038 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.
“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,”
NHTSA complaint #11309140, filed 2020-02, 26,000 miles“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”
NHTSA complaint #11298009, filed 2020-01, 6,038 miles“When I purchased my truck on 08/17/2019. The window sticker said my heater block was disable. The service dept. Said there is a recall on this. I cannot go in cold weather until this is resolved. Can you tell me when it will be resolved.”
NHTSA complaint #11281804, filed 2019-11Related service bulletins
- 11026017Jun 5, 2025This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- 11024485May 15, 2025The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 11020254May 7, 2025This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in…
- 11019503Apr 18, 2025This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California…
- 11017263Mar 25, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11016942Mar 4, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 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.
- 11014233Jan 30, 2025This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11012907Dec 18, 2024This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
Engine: other model years
Other parts of the 2019 GMC Sierra Denali
8 complaintsSteering
7 complaintsElectrical system
5 complaintsElectronic stability control
5 complaintsOther or unknown
5 complaintsTransmission and drivetrain
4 complaintsExterior lighting
2 complaintsBack-over prevention (rear camera)
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsBody and structure
1 complaintsTires
1 complaints
← All problems reported for the 2019 GMC Sierra Denali
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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