2015 GMC Denali Transmission and drivetrain Problems
- Complaints
- 5about this part
- Share
- 28%of 18 total for the year
- Median mileage
- 37,208miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the transmission and drivetrain of the 2015 GMC Denali, 28% of the 18 complaints for this model year. Where a mileage was given, the median is 37,208 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.
“My truck has 30,000 miles and has the 'chevy shudder'. Why is this not a recall? Gmc wants me to pay out of pocket for the transmission flush. When I am driving the truck it begins shuddering and shaking through certain shift points.”
NHTSA complaint #11338832, filed 2020-07, 30,000 miles“Letter from senator feinstein inquiry on behalf of constituent in regards to having problems with Gmc sierra Denali pickup 2015. The consumer stated the vehicle has had multiple issues with the suspension, transmission, and electronics. The vehicle would ride rough and the stability light would illuminate. The transmission needed to be replaced. The electronic dash blacked out and would not function, the settigns switched on their own. The vehicle died and shifted dangerously. The manufaturer was notified. The consumer a fix was unavailable. Updated 08/09/2017”
NHTSA complaint #11014368, filed 2017-08Related service bulletins
- 10239103Jun 29, 2023This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.
- 10237846Jun 7, 2023This service bulletin provides information to dealership personnel on automatic transmission shift and engine driveability concerns and/or MIL ON due to aftermarket oil bath air…
- 10237387May 30, 2023This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be…
- 10234619Apr 6, 2023This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 10235561Apr 4, 2023This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
- 10232275Feb 16, 2023This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
- 10228863Dec 13, 2022This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10227241Nov 18, 2022This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and…
- 10222777Sep 16, 2022This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 10222770Sep 16, 2022This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
Transmission and drivetrain: other model years
Other parts of the 2015 GMC Denali
6 complaintsElectrical system
4 complaintsBrakes
2 complaintsSteering
2 complaintsElectronic stability control
1 complaintsEngine
1 complaintsFuel system
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 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