2018 GMC Sierra 3500: Recalls, Problems & MPG
Here are the deets on the 2018 GMC Sierra 3500: 6 recalls, 14 owner complaints.
Recalls
6 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Seat belts Vehicle recall #17V567000 · 2017 · 38,048 vehicles
What's wrong: 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."
Why it matters: The seat belt retractors May not perform as intended during a crash, increasing the risk of injury.
The fix: Gm will notify owners, and dealers will replace both front seat belt retractor assemblies, free of charge. The recall began March 24, 2021.
Fuel system Vehicle recall #19V088000 · 2019 · 18,574 vehicles
What's wrong: The fuel-level sensor in the front tank May stick in a low-level position, allowing the rear tank to overfill the front tank.
Why it matters: If the front tank overfills, the excess pressure May cause the front tank to expand and contact the driveshaft, possibly resulting in a hole in the tank. The hole will leak fuel, which in the presence of an ignition source, can increase the risk of a fire.
The fix: Gm has notified owners, and dealers will replace the rear-tank fuel-pump module, inspect the front tank and, if necessary, replace the front tank, free of charge. The recall began July 30, 2019. Gm's number for this recall is n182204190.
Engine Vehicle recall #19V328000 · 2019 · 318,374 vehicles
What's wrong: 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.
Why it matters: A short-circuit May damage the engine components and increase the risk of fire.
The fix: Gm will contact owners, dealers will replace the engine block heater, free of charge. Additionally, in Chevrolet silverado 2500 and 3500 vehicles, dealers will install a new rerouted heater cord. The recall began December 11, 2019.
Equipment Vehicle recall #21V496000 · 2021 · 338,020 vehicles
What's wrong: 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.
Why it matters: An electrical short-circuit can increase the risk of a fire.
The fix: Dealers will replace engine block heaters and heater cords. Vehicles that have this feature disabled as a remedy to the safety condition will be contacted and offered replacement block heaters and heater cords under a separate customer satisfaction program, free of charge. Gm will provide free…
Fuel system (diesel) Vehicle recall #23V047000 · 2023 · 22,132 vehicles
What's wrong: The rear fuel tank May collapse and prevent the fuel pump from transferring fuel to the front tank, resulting in an engine stall.
Why it matters: An engine stall increases the risk of a crash.
The fix: Dealers will inspect the fuel tank and fuel pump module, replacing them as necessary. Dealers will also add a vent hose to the rear tank assembly. Repairs will be performed free of charge. An interim owner notification letter informing owners of the safety risk was mailed on March 15, 2023. Owner…
Airbags Vehicle recall #24V756000 · 2024 · 2,061 vehicles
What's wrong: The left or right-side roof-rail air bag (rrab) inflator end cap May detach from the inflator or the inflator sidewall May rupture.
Why it matters: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
The fix: Dealers will replace the left and right side rrab modules, free of charge. Owner notification letters were mailed November 8, 2024.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 0 injuries and 0 deaths were reported.
What owners describe
- Brakes (6): the most common themes are warning light on (3), brake failure / soft pedal (2).
- Steering (3): the most common themes are steering problems (3).
- Exterior lights (2): no single recurring theme in the descriptions.
- Electrical (2): the most common themes are warning light on (2).
The 2018 GMC Sierra 3500 has 14 owner complaints, ranking #19 of 31 Sierra 3500 model years for complaints (about average; the typical year has 19). Complaints peaked in 2019 (4 filed that year). The typical problem showed up when the car was about 2 years old, at a median of 53,800 miles. Neighboring years: 2017 (13 complaints, 7 recalls), 2019 (13 complaints, 7 recalls).
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2018 GMC Sierra 3500.
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FAQ
Does the 2018 GMC Sierra 3500 have any recalls?
Yes. NHTSA lists 6 vehicle recalls for the 2018 GMC Sierra 3500. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2018 GMC Sierra 3500 problems?
Owners have filed 14 complaints with NHTSA. The most-reported areas are brakes (6), steering (3), exterior lights (2).
Where can I get a 2018 GMC Sierra 3500 repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.