2014 GMC Denali Engine Problems
- Complaints
- 1about this part
- Share
- 20%of 5 total for the year
- Median mileage
- 57,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2014 GMC Denali, 20% of the 5 complaints for this model year. Where a mileage was given, the median is 57,000 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.
“While driving on a city street the 2014 Gmc sierra 6.2 l v8 lost power and started running rough as approaching an intersection. I was able to stop, and reverse the vehicle away from the intersection, to get out of traffic. The engine light was flashing and the truck shut down, it was unable to restart. The truck had under 60,000 miles on it at the time of the first incident. It was towed to a GM dealer shop for repair. This first incident took place in august of 2019. The rocker arm and exhaust spring had to be replaced in the #2 cylinder, the cylinder head had to be rebuilt with a new head. …”
NHTSA complaint #11291861, filed 2019-12, 57,000 milesRelated service bulletins
- 10211658May 2, 2022This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
- 10201098Dec 1, 2015OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
- 10190503Dec 1, 2015OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
Engine: other model years
Other parts of the 2014 GMC Denali
1 complaintsElectrical system
1 complaintsElectronic stability control
1 complaintsFuel system
1 complaints
← All problems reported for the 2014 GMC Denali
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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