2004 GMC Sierra 2500 Engine cooling Problems
- Complaints
- 9about this part
- Share
- 6%of 143 total for the year
- Median mileage
- 53,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the engine cooling of the 2004 GMC Sierra 2500, 6% of the 143 complaints for this model year. Where a mileage was given, the median is 53,000 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.
“Bolts that hold exhaust manifold are breaking 3 are gone already I just noticed it today because I heard an exhaust leak unknown how long this has been going on.”
NHTSA complaint #10396092, filed 2011-04, 60,000 miles“Left and right sides rear exhaust manifold bolts broken off. It leaks exhaust, may be a fire hazard and could cause emissions failure and emissions components failures. This problem is on a 2004 Gmc 6.0 engine. Noticed ticking noise at about 38000 miles and it would go away after 30-45 seconds. A GM rep said it was most likely the skirt less pistons and not to worry. Had some work done at a garage about a week ago and mechanic pointed out the broken bolts.”
NHTSA complaint #10403940, filed 2011-05, 38,000 miles“Letter on behalf of constituent requesting assistance in difficulties dealing with GM regarding a manufacturer's defect in the electrical circuits in his 2004 Gmc k2500 pickup truck. The consumer stated the vehicle stalled for no reason while driving 70 MPH on the highway. He lost all electrical circuits, power steering and brakes. After 45 minutes, the vehicle restarted. The next day, the consumer took the vehicle to the dealer, where the mechanic found loose pins on the wiring harness connectors at c107 and c108. …”
NHTSA complaint #10283188, filed 2009-08, 8,000 miles“Speedometer stopped working at approx 45,000 mi. Followed by oil pressure and voltmeter at approx 60,000 mi. Also coolant leak behind timing cover at approx 50,000 mi.”
NHTSA complaint #10251595, filed 2008-12, 45,000 miles“Flywheel on four locally owned GM trucks were reported being cracked or broken. Old parts are avail. Since then speedometer doesn't work properly and I am told there's no problem.”
NHTSA complaint #10167270, filed 2006-09, 53,000 milesRelated service bulletins
- 10251887Mar 14, 2024This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.
- 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.
- 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…
- 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…
- 10240344Jul 31, 2023This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- 10236164Apr 24, 2023This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
- 10235802Apr 24, 2023This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 2% |
| 2020 | 2 | 3% |
| 2019 | 2 | 6% |
| 2014 | 1 | 3% |
| 2013 | 1 | 2% |
| 2011 | 1 | 2% |
| 2009 | 1 | 3% |
| 2008 | 1 | 2% |
| 2007 | 2 | 2% |
| 2006 | 5 | 8% |
| 2005 | 13 | 11% |
| 2004 | 9 | 6% |
| 2003 | 5 | 3% |
| 2002 | 11 | 8% |
| 2001 | 21 | 16% |
| 2000 | 4 | 8% |
| 1998 | 1 | 7% |
Other parts of the 2004 GMC Sierra 2500
56 complaintsElectrical system
48 complaintsEngine
9 complaintsTransmission and drivetrain
9 complaintsFuel system
8 complaintsSteering
7 complaintsBody and structure
5 complaintsEquipment
3 complaintsTires
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsAir bags
2 complaintsElectronic stability control
2 complaints
← All problems reported for the 2004 GMC Sierra 2500
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