2003 GMC Sierra 1500 HD Engine cooling Problems
- Complaints
- 1about this part
- Share
- 6%of 16 total for the year
- Median mileage
- 99,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2003 GMC Sierra 1500 HD, 6% of the 16 complaints for this model year. Where a mileage was given, the median is 99,500 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.
“The contact owns a 2003 Gmc SIERRA 1500 HD. The contact stated that the bolts on the manifold were fractured and caused leakage through the exhaust emission before going to the catalytic converter. The dealer was notified who advised replacing the bolts and manifold. The manufacturer was notified who stated there were no recalls and offered no further assistance. The failure mileage was 99,500. The consumer stated he first heard a ticking sound coming from the engine. He eventually found the exhaust manifold heads broken off the bolt shanks. …”
NHTSA complaint #10424324, filed 2011-09, 99,500 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.
- 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.
- 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.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2003 | 1 | 6% |
Other parts of the 2003 GMC Sierra 1500 HD
6 complaintsElectrical system
4 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsEngine
2 complaintsEquipment
1 complaintsSteering
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2003 GMC Sierra 1500 HD
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