2020 GMC Sierra 2500 Fuel system Problems
- Complaints
- 2about this part
- Share
- 3%of 80 total for the year
- Median mileage
- 125,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the fuel system of the 2020 GMC Sierra 2500, 3% of the 80 complaints for this model year. Where a mileage was given, the median is 125,000 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.
“DEF tank system failure. Vehicle is under warranty, 18 months old, (purchased 08/20) with 20,000 miles. 6 WEEKS AGO I took to dealer who informed me that there are no DEF tanks available and don't know when they will be available. This is a hazard: if I am on a trip and the system shuts off I could be stranded anywhere with the reduced speed that the DEF system creates. If this system is designed to shut off (with warning) there should be ample supplies at all GMC dealers for repair. If there aren't ample supplies the system should NOT shut the truck down. …”
NHTSA complaint #11456825, filed 2022-03“The contact owns a 2020 GMC Sierra 2500. The contact stated that the vehicle was under NHTSA Campaign Number: 24V797000 (Power Train) and the vehicle was repaired. The contact stated that after the recall repair, the transmission started shifting hard. The vehicle was taken to the dealer, and the contact was informed that the transmission module would reprogram and adjust independently. The contact stated that a week later, while driving approximately 45 MPH, the vehicle started to run rough, and the message engine power reduced was displayed. …”
NHTSA complaint #11655399, filed 2025-04, 125,000 milesRelated 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.
- 11011443Oct 15, 2024This Preliminary information communicates information on faulty replacement K111 Fuel Pump Driver Control Module.
- 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.
- 11009462Sep 23, 2024This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap…
- 11009430Sep 19, 2024This technical bulletin provides a procedure to correct the condition of Malfunction Indicator Lamp Illuminated with DTCs P2463 P2459 P11FB P11D3.
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 2020 GMC Sierra 2500
25 complaintsOther or unknown
18 complaintsBrakes
13 complaintsElectrical system
13 complaintsEngine
10 complaintsSteering
6 complaintsBody and structure
6 complaintsForward collision avoidance
5 complaintsVehicle speed control
4 complaintsEngine cooling
2 complaintsExterior lighting
2 complaintsTires
2 complaints
← All problems reported for the 2020 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