Worst 2018 GMC Sierra 2500 Problems
Top 3 most-reported issues with average mileage at failure.
Engine Problems
Electrical Faults
Other Equipment
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All Problems by Category
Every NHTSA complaint category for the 2018 GMC Sierra 2500.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Engine Problems | 7 | — | — | 5,641 mi | |
| Electrical Faults | 6 | — | 2 | 28,000 mi | |
| Other Equipment | 4 | — | — | — | |
| Headlight/Taillight Failures | 4 | — | — | — | |
| Fuel System | 4 | — | — | — | |
| Transmission / Drivetrain | 2 | — | — | — | |
| Tire Defects | 2 | — | — | — | |
| Wipers & Visibility | 2 | — | — | — | |
| Back Over Prevention: Warnings | 1 | — | — | — | |
| Diesel Fuel System | 1 | — | — | — | |
| Automatic Transmission | 1 | — | — | — | |
| Seat Belt Issues | 1 | — | — | — | |
| Steering Defects | 1 | — | — | — | |
| Tires:Sidewall | 1 | — | — | — | |
| Wheel Issues | 1 | — | — | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2018 GMC Sierra 2500. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2018 GMC Sierra 2500
5 NHTSA recall campaigns affecting ~718,635 vehicles.
General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture.
General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles equipped with a dual fuel tank option. The rear fuel tank may collapse and prevent the fuel pump from transferring fuel to the front tank, resulting in an engine stall.
General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500 and 2017-2019 GMC Sierra 2500 and 3500 vehicles equipped with a Duramax diesel 6.6 liter engine and an optional engine-block heater cord. An electrical short-circuit may occur in the engine-block heater cable or in the terminals that connect the heater cable to the block heater.
General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block heater cord or the terminals that connect the heater cord to the block heater may short circuit and fail.
General Motors (GM) is recalling certain 2017-2018 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 trucks. The front seat belt retractor assemblies were built with the incorrect torsion bar. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 209, "Seat Belt Assemblies."
Other GMC Sierra 2500 Years
2018 GMC Sierra 2500 — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2018 GMC Sierra 2500 reliable?
What are common problems with the 2018 GMC Sierra 2500?
At what mileage do problems start on the 2018 GMC Sierra 2500?
Does the 2018 GMC Sierra 2500 have any recalls?
Should I buy a 2018 GMC Sierra 2500?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full GMC Sierra 2500 reliability report with year-by-year comparison and generation analysis.
Check Your Specific 2018 GMC Sierra 2500
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.
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