2003 GMC Sierra 2500 Fuel system Problems
- Complaints
- 15about this part
- Share
- 9%of 160 total for the year
- Median mileage
- 118,736miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 15 complaints about the fuel system of the 2003 GMC Sierra 2500, 9% of the 160 complaints for this model year. Where a mileage was given, the median is 118,736 miles. 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Had injectors replaced under warranty at 50000 miles after noticing excess exhaust smoke on startup and also power steering hoses were leaking, again at 105000 miles they totally failed as I was bringing my wife home from hospital on I-15 in ca. Up cajon pass and had to be towed to dealer, but GM dealer would not cover injectors under warranty as truck was11 years old and their coverage was for 7 years only, now again had to have them replaced at 147000 miles because of excessive smoke on startup. …”
NHTSA complaint #11308791, filed 2020-02, 157,000 miles“(electrical) as an ongoing issue, the dashboard gauges/indicators (I.e. Tach, speedometer, etc..) will sometimes not register until several minutes after the vehicle has been running (this could be for up to miles) it has not affected vehicle performance to date. (fuel/propulsion system) I have begun having issues where it goes into reduced engine power . Further diagnostic attempts have LED me to believe that it is due to a faulty throttle position sensor (part of the throttle body), tac module, or app assembly (accelerator pedal). …”
NHTSA complaint #10705003, filed 2015-04, 142,000 miles“I own a 2003 Gmc duramax 167000 miles, it has been a great truck until recently, after engine gets hot it will not start back up until it has cooled off! Have not been able to find the problem yet, but found a lot of complaints online from people with the same problem, [injectors], very expensive to repair!!! This problem is very frustrating, would be great if general motors would correct this problem!!!!”
NHTSA complaint #10597728, filed 2014-06, 162,000 miles“While driving, large amount of smoke came out. Took it to GM dealer who said that it the fuel injectors were leaking. Looked online and noticed hundreds of reports of the same action. Gmc apparently did an extended warranty for the issue, but only covered it for 7 years from time of purchase and up to 200,000 miles. Talked to local dealer who denied the service and GM wont replace the fuel injectors.”
NHTSA complaint #10547854, filed 2013-10, 110,000 miles“Brake line rusted through and lost all braking capability. Luckly it happened pulling into my driveway and not on the highway! Fuel lines rusted through and leaking fuel puddling onto the ground.”
NHTSA complaint #10826044, filed 2016-02, 100,010 milesRelated service bulletins
- 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…
- 10209734Mar 22, 2022This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 10208027Jan 14, 2022This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester…
- 10171878Jan 2, 2020This informational 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…
- 10165331Jul 3, 2019This SKU is a Preformed Fuel Line. The customer communication requested return of unsold inventory to inspect for damage to the braided hose and crimps. Damaged braided hoses and…
- 10129057Jan 9, 2018This Preliminary Information communication provides information to the technician about vehicles that have an oil leak shortly after a cold start when extremely low ambient…
- 10126346Oct 2, 2015This informational bulletin provides information to dealership personnel on identifying Duramax Diesel overpower engine breakdown or non-function due to aftermarket power-up…
- 10250012Jul 1, 2014Duramax® Diesel Glow Plugs Difficult to Install Due to Carbon Buildup - New Glow Plug Bore Reamer Available
- 10246499Jul 1, 2014Duramax® Diesel Glow Plugs Difficult to Install Due to Carbon Buildup - New Glow Plug Bore Reamer Available
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 7% |
| 2025 | 1 | 4% |
| 2024 | 9 | 8% |
| 2022 | 4 | 9% |
| 2021 | 2 | 4% |
| 2020 | 2 | 3% |
| 2019 | 6 | 19% |
| 2018 | 6 | 17% |
| 2017 | 3 | 8% |
| 2016 | 12 | 20% |
| 2015 | 12 | 13% |
| 2014 | 3 | 10% |
| 2013 | 9 | 20% |
| 2012 | 5 | 16% |
| 2011 | 3 | 5% |
| 2009 | 2 | 6% |
| 2008 | 4 | 6% |
| 2007 | 3 | 4% |
| 2006 | 2 | 3% |
| 2005 | 3 | 3% |
| 2004 | 8 | 6% |
| 2003 | 15 | 9% |
| 2002 | 12 | 9% |
| 2001 | 12 | 9% |
| 2000 | 2 | 4% |
| 1999 | 2 | 6% |
| 1998 | 2 | 13% |
| 1997 | 1 | 7% |
Other parts of the 2003 GMC Sierra 2500
73 complaintsElectrical system
36 complaintsTransmission and drivetrain
13 complaintsSteering
10 complaintsEngine
6 complaintsEngine cooling
5 complaintsBody and structure
5 complaintsSuspension
5 complaintsVehicle speed control
4 complaintsTires
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsEquipment
2 complaints
← All problems reported for the 2003 GMC Sierra 2500
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