2008 GMC Yukon Denali XL Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 5%of 42 total for the year
- Median mileage
- 113,140miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 2008 GMC Yukon Denali XL, 5% of the 42 complaints for this model year. Where a mileage was given, the median is 113,140 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.
“Was waiting for a red light to change and suddenly my dashboard lit up saying it was reducing power to the engine, disabling stability control and something else.. I was not able to drive the car for for 2 hours after that... I.got the car towed to my house and when I went back to fallowing morning the car started with out the engine light on..2 days after the same thing happened while driving on the highway at 65 MPH, it was a scary experience since the car reduced power very fast to 20 MPH.. Almost got into an accident.”
NHTSA complaint #10425953, filed 2011-09, 111,280 miles“Driving at 70 MPH on highway. Vehicle gauges begin to act erratically, vehicle heaves and lurches, then 100% power failure. Nothing worked, even hazzard lights. Airbag light flashing on and off. Was able to put vehicle in neutral and move to the side of the road where the vehicle stopped. There was no power at all, had to manually open door locks. After 10-15 minutes, the power came back on and I was able to restart the vehicle and drive home. Happened again on 3/23/14. …”
NHTSA complaint #10576129, filed 2014-04, 115,000 milesRelated service bulletins
- 11009088Sep 16, 2024This 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…
- 11006421Jul 24, 2024GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or…
- 11001321May 16, 2024This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 11000119Apr 26, 2024This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
- 10250347Feb 2, 2024This 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…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10248721Dec 18, 2023This bulletin advises the technician that the 6L50 (MYB), 6L80 (MYC) and 6L90 (MYD) Transmission Oil Filter and Seal Kit part number 24236933 is currently transitioning from a…
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10247768Sep 1, 2023This Preliminary Information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at…
- 10242843Sep 1, 2023The 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…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2016 | 3 | 10% |
| 2015 | 9 | 14% |
| 2012 | 1 | 4% |
| 2009 | 1 | 5% |
| 2008 | 2 | 5% |
| 2007 | 1 | 2% |
| 2006 | 1 | 9% |
| 2005 | 4 | 12% |
| 2004 | 2 | 4% |
| 2003 | 2 | 6% |
Other parts of the 2008 GMC Yukon Denali XL
17 complaintsOther or unknown
8 complaintsBody and structure
6 complaintsElectrical system
4 complaintsEngine
4 complaintsElectronic stability control
3 complaintsLatches, locks and linkages
3 complaintsFuel system
2 complaintsWheels
2 complaintsBrakes
1 complaintsEngine cooling
1 complaintsExterior lighting
1 complaints
← All problems reported for the 2008 GMC Yukon Denali XL
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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