2015 GMC Denali Fuel system Problems
- Complaints
- 1about this part
- Share
- 6%of 18 total for the year
- Median mileage
- 130,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the fuel system of the 2015 GMC Denali, 6% of the 18 complaints for this model year. Where a mileage was given, the median is 130,000 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.
“Under normal driving conditions, my cp4 fuel injection system blew up. I had to have it towed to the nearest diesel repair shop, $14.000 later , I was back up and running”
NHTSA complaint #11309254, filed 2020-02, 130,000 milesRelated service bulletins
- 10234144Mar 20, 2023This informational 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.
- 10222766Sep 16, 2022This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles…
- 10222765Sep 14, 2022This service bulletin provides the technician with additional information on fuels, fuel additives and fuel management.
- 10222739Sep 13, 2022This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 10218873Aug 10, 2022This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10213036May 16, 2022This informational 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.
- 10171878Jan 2, 2020This informational bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended…
Fuel system: other model years
Other parts of the 2015 GMC Denali
6 complaintsTransmission and drivetrain
5 complaintsElectrical system
4 complaintsBrakes
2 complaintsSteering
2 complaintsElectronic stability control
1 complaintsEngine
1 complaintsOther or unknown
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2015 GMC 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