2003 GMC Denali Engine cooling Problems
- Complaints
- 2about this part
- Share
- 6%of 32 total for the year
- Median mileage
- 32,748miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2003 GMC Denali, 6% of the 32 complaints for this model year. Where a mileage was given, the median is 32,748 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.
“Faulty pully assembly on 2003 Gmc vechicles their is a service bulletin out about the problem in 2004. I learned of the report 8/7/08.after replacing 5 belts and tensioners. After compressor breaks apart while under car trying to fine this horrible noise upon acceleration.while under warranty I carried the car in 4 times for noises on the passenger side front never to be resolved ,now it is so bad it is obvious where the problem is. Their is no recall yet but should be,the mech. Says they replace 2 compressors a week. Someones safety is going to be challenged be for thier is a recall. …”
NHTSA complaint #10237642, filed 2008-08, 30,000 miles“When vehicle is driven then turned off the exhaust system, while cooling down, cracks and pops. Volume is extremely loud. More so than any vehicle I have heard in the past. This is worse in cold weather than warm.”
NHTSA complaint #10148926, filed 2006-01, 35,495 milesRelated service bulletins
- 10251890Mar 13, 2024This 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…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 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…
- 10242262Aug 24, 2023This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and…
- 10235802Apr 24, 2023This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10234141Mar 23, 2023This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10234110Mar 17, 2023This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
- 10228888Dec 14, 2022This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or…
- 10227056Nov 9, 2022This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
Engine cooling: other model years
Other parts of the 2003 GMC Denali
7 complaintsElectrical system
6 complaintsSteering
5 complaintsVehicle speed control
5 complaintsTransmission and drivetrain
3 complaintsElectronic stability control
2 complaintsExterior lighting
2 complaintsAir bags
1 complaintsEngine
1 complaintsEquipment
1 complaintsFuel system
1 complaintsSeat belts
1 complaints
← All problems reported for the 2003 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