The 2018 GMC Sierra 3500 has 6 NHTSA recall campaigns affecting an estimated 737,209 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 20 complaints with NHTSA, most often about the service brakes. Last updated July 5, 2026.
Recall campaigns
AIR BAGS24V7560002024-10-102,061 affected
Defect
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.
Consequence
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.
Remedy
Dealers will replace the left and right side RRAB modules, free of charge. Owner notification letters were mailed November 8, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC Customer Service at 888-988-7267. GM's number for this recall is N242474500.
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.
Consequence
An engine stall increases the risk of a crash.
Remedy
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 notification…
EQUIPMENT21V4960002021-07-01338,020 affected
Defect
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…
Consequence
An electrical short-circuit can increase the risk of a fire.
Remedy
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 replacement block…
ENGINE19V3280002019-04-25318,374 affected
Defect
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…
Consequence
A short-circuit may damage the engine components and increase the risk of fire.
Remedy
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. Owners may contact GM customer service at 1-586-596-1733. GM's number for this…
General Motors, LLC (GM) is recalling certain 2016-2018 GMC Sierra 3500 and Chevrolet Silverado 3500 trucks equipped with gasoline engines and dual fuel tanks. The fuel-level sensor in the front tank may stick in a low-level position, allowing the rear tank to overfill the front tank.
Consequence
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.
Remedy
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.
SEAT BELTS17V5670002017-09-1438,048 affected
Defect
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…
Consequence
The seat belt retractors may not perform as intended during a crash, increasing the risk of injury.
Remedy
GM will notify owners, and dealers will replace both front seat belt retractor assemblies, free of charge. The recall began March 24, 2021. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. GM's numbers for this recall are 17368, 17375, and 17376.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“The contact owns a 2018 gmc sierra 3500. The contact stated while operating the vehicle at an undisclosed speed the vehicle suddenly shutoff, the vehicle was coasted to side of the road. The contact referenced nhtsa campaign number: 21v739000 (fuel system, gasoline) however, the vin was not…”
“Driving on the freeway going approx 70 mph and the abs warning light, and stabilitrak warning light suddenly turned on. I’m sure you can imagine how panicked I was going that fast on the freeway and having my brake warnings suddenly turn on. Especially with my entire family in the vehicle with…”
“Driving on the freeway going approx 70 mph and the abs warning light, and stabilitrak warning light suddenly turned on. I’m sure you can imagine how panicked I was going that fast on the freeway and having my brake warnings suddenly turn on. Especially with my entire family in the vehicle with…”
“Driving on the freeway going approx 70 mph and the abs warning light, and stabilitrak warning light suddenly turned on. I’m sure you can imagine how panicked I was going that fast on the freeway and having my brake warnings suddenly turn on. Especially with my entire family in the vehicle with…”
“The contact owns a 2018 gmc sierra 3500. The contact stated while driving at various speeds, several unknown warning lights illuminated on the instrument panel. The contact pulled over to the shoulder of the roadway to restart the vehicle. After the vehicle was restarted, the vehicle hesitated to…”
“The contact owns 2018 gmc sierra 3500. The contacted stated that while the vehicle was parked in the driveway, the vehicle started and the defrost system was activated and the contact's daughter entered the vehicle and saw that it was smoking and informed the contact. When the contact arrived at…”
“17jan2023. 2018 gmc sierra 3500hd denali. Northbound on i37 near three rivers, tx. Speed approx 75 mph. Temp approx 55f. Wx conditions, 1/2 mile vis in fog. Traffic, zero vehicles ahead, one vehicle approx 100 yards behind. Time approx 0815. No overpasses encountered. Cruise control engaged. My…”
“A persistent, very distracting alert saying "service trailer brakes"”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2018 GMC Sierra 3500 as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
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