2018 GMC Sierra 2500 Fuel system Problems
- Complaints
- 6about this part
- Share
- 17%of 35 total for the year
- Median mileage
- 25,750miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the fuel system of the 2018 GMC Sierra 2500, 17% of the 35 complaints for this model year. Where a mileage was given, the median is 25,750 miles. 1 recall campaign on record is filed under a similar system.
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 pigtail connector for fule injectors. Cause The vehicle to shut down even while going down the highway possibly causing injury by immediate deceleration wich could cause an accident. For me on this vehicle I’ve had this happen three times and it has cost me anywhere from $800 to 1000 per injector especially if damage is done to one of the fuel injectors.”
NHTSA complaint #11460968, filed 2022-04“The contact owns a 2018 GMC Sierra 2500. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. No warning light was illuminated. The vehicle was towed to the dealer, where it was determined that the fuel pump control module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 48,000.”
NHTSA complaint #11618888, filed 2024-10, 48,000 miles“GM Duramax L5P diesel engine electrical connector for #4 fuel injector. This failure caused the Diesel exhaust brake, which controls downhill speed, to disengage, extreme shaking of the vehicle, emissions system warning and speed limiting. This occurred while descending a steep grade while towing a 34 feet long, 10,000 pound trailer. This is a known issue with this diesel engine and documented in GM Technical Service Bulletin 23-NA-027. …”
NHTSA complaint #11736800, filed 2026-05“Constant issues with glow plug failures, fuel rail failure, fuel pressure failure. Truck has been in the Gmc service regarding these issues constantly for the last year with a total of five repairs and replacement of glow plugs with releaning learning new plugs and now the 6th return to the shop they’re tearing down the fuel system. Malfunction and engine light consistently come on with the same occurring problems generating from the fuel system and glow plugs. Fuel mileage is absolutely terrible and lose of power hazardous to safety!!! …”
NHTSA complaint #11553304, filed 2023-11Related recalls
- 23V047000Feb 2, 2023General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles equipped with a dual fuel tank…Covers: GMC Sierra 2500 2017–2019, Sierra 3500 2017–2019, Chevrolet Silverado 3500 2017–2019 +1 more
Related service bulletins
- 11017173Mar 21, 2025This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- 11010874Oct 15, 2024This bulletin provides information on how to look for and test for DEF or water in the fuel system and what the specs should be.
- 11009430Sep 19, 2024This technical bulletin provides a procedure to correct the condition of Malfunction Indicator Lamp Illuminated with DTCs P2463 P2459 P11FB P11D3.
- 11007095Aug 7, 2024This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles…
- 11004727Jun 29, 2024This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 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…
- 10250505Feb 7, 2024This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10249994Jan 24, 2024This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have rattle or ticking noise that is louder…
- 10249971Jan 10, 2024This Preliminary Information communication provides information to the technician about vehicles that may have a bump feel or clunk noise at a stop or on launch. Dealer should…
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 2018 GMC Sierra 2500
8 complaintsElectrical system
7 complaintsOther or unknown
5 complaintsEquipment
4 complaintsExterior lighting
4 complaintsTires
3 complaintsTransmission and drivetrain
3 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsBack-over prevention (rear camera)
1 complaintsSeat belts
1 complaintsSteering
1 complaintsWheels
1 complaints
← All problems reported for the 2018 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