2003 GMC Yukon XL Denali Engine Problems
- Complaints
- 2about this part
- Share
- 6%of 32 total for the year
- Median mileage
- 141,990miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2003 GMC Yukon XL Denali, 6% of the 32 complaints for this model year. Where a mileage was given, the median is 141,990 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.
“Driving 65 MPH on the highway and all of a sudden my car loses power. This is very dangerous! The dash says reduced engine power. Engine light comes on. Codes for the problem p0120, p0171, p0174, p0300, p2135. I got everything done that was suggested the codes are gone and it's still happening!! Not sure what the Gmc dealership is up to but they don't have a clue to what's causing it or how to fix it!”
NHTSA complaint #10489118, filed 2012-12, 117,900 miles“We were driving up in the mountains and we lost power briefly to the engine. The lights flickered and the dash board went out. Then the loss of engine power came on and the stability/traction came on too. This has happened weekly for the last two years. This last time was alarming since we were coming down a mountain in a storm and could have been stranded up there with no running vehicle to keep us warm. This needs to get a recall or investigation going on these vehicles. …”
NHTSA complaint #10639858, filed 2014-09, 166,081 milesRelated service bulletins
- 11012907Dec 18, 2024This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 11010544Oct 7, 2024This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 11004761Jun 28, 2024This service 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 crank or…
- 10211658May 2, 2022This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
- 10176607May 8, 2020This technical 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 crank…
- 10082869Aug 29, 2016This informational bulletin provides additional information on how to install pistons and suggest what tools to use.
- 10082814Aug 2, 2016This informational bulletin provides information to gm dealers on the correct cleaning methods when cleaning engine gasket sealing surfaces.
- 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
| Year | Complaints | Share of year |
|---|---|---|
| 2003 | 2 | 6% |
Other parts of the 2003 GMC Yukon XL Denali
13 complaintsElectronic stability control
4 complaintsBrakes
3 complaintsTransmission and drivetrain
3 complaintsEngine cooling
2 complaintsOther or unknown
2 complaintsSuspension
2 complaintsTires
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsAir bags
1 complaintsFuel system
1 complaintsSeat belts
1 complaints
← All problems reported for the 2003 GMC Yukon XL Denali
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