2017 GMC Sierra Denali Engine Problems
- Complaints
- 2about this part
- Share
- 13%of 15 total for the year
- Median mileage
- 104,650miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2017 GMC Sierra Denali, 13% of the 15 complaints for this model year. Where a mileage was given, the median is 104,650 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.
“Noticed vivid and persistent engine vibration shortly after purchase - with no associated check engine code. Vibration happens at all engine and ambient temperatures (especially below 50 degrees fahrenheit), at all altitudes, regardless if in park, neutral, or drive. Vibration is so noticeable, you can watch the waves vibrate through a class of water when placed on the dashboard. Taken to two different dealerships and both have stated the vibration experienced is per normal design for 6.2l engine. Hard to believe GM would design a $65k+ vehicle that purposely vibrates/shakes. …”
NHTSA complaint #11018892, filed 2017-08, 300 miles“The contact owns a 2017 GMC Sierra 2500 Denali. The contact stated that while driving at an undisclosed speed, the vehicle went into LIMP Mode. There was no warning light illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the knock sensor had failed and needed to be replaced. The vehicle was not repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 209,000.”
NHTSA complaint #11727937, filed 2026-03, 209,000 milesRelated 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 2017 GMC Sierra Denali
3 complaintsTransmission and drivetrain
3 complaintsAir bags
1 complaintsElectrical system
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsExterior lighting
1 complaintsSeat belts
1 complaintsSuspension
1 complaintsWheels
1 complaints
← All problems reported for the 2017 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