2018 Gmc Sierra 2500 problems, complaints & recalls
Most-reported problem areas: Fuel/Propulsion System (5) · Equipment (4) · Engine (4)
🧭 Reliability snapshot
Compared against other Gmc Sierra 2500 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (5)
Air Bags:side/Window:curtain:inflator 2024-10-10 · campaign 24V756000 · 2,061 vehicles
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.
Risk: 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.
Fix: 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.
Fuel System, Diesel:storage:tank Assembly 2023-02-02 · campaign 23V047000 · 22,132 vehicles
Defect: 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.
Risk: An engine stall increases the risk of a crash.
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 notification letters were mailed June 21, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N222368030
Equipment:electrical:engine Block Heater 2021-07-01 · campaign 21V496000 · 338,020 vehicles
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 that connect the heater cable to the block heater.
Risk: An electrical short-circuit can increase the risk of a fire.
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 replacement block heaters and cords under a separate customer satisfaction campaign. For vehicles previously included in recall 19V-328, the heater cord will be replaced and rerouted, free of charge. In
Engine 2019-04-25 · campaign 19V328000 · 318,374 vehicles
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 terminals that connect the heater cord to the block heater may short circuit and fail.
Risk: A short-circuit may damage the engine components and increase the risk of fire.
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. Owners may contact GM customer service at 1-586-596-1733. GM's number for this recall is N182206310.
Seat Belts:front:retractor 2017-09-14 · campaign 17V567000 · 38,048 vehicles
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 209, "Seat Belt Assemblies."
Risk: The seat belt retractors may not perform as intended during a crash, increasing the risk of injury.
Fix: 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.
Service bulletins (1,118)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-09-26 · PIP6133 · Service Bulletin/Repair Instructions
this pi was created to help address the correct repair regarding a low coolant message on the dic
Unknown Or Other 2026-09-26 · PIT5698F · Service Bulletin/Repair Instructions
this pi provides diagnostics tips on how the lin bus works and how to diagnosis it.
Unknown Or Other 2026-09-04 · PIP4902W · Service Bulletin/Repair Instructions
this preliminary information advises a dealer on how to email gds2 session logs into technical assistance.
Unknown Or Other 2026-07-23 · PIT5680B · Service Bulletin/Repair Instructions
this pi provides information to repair the door water deflector which is not sealed properly allows water into the door jam/sill area.
Unknown Or Other 2026-07-21 · PIT5099J · Service Bulletin/Repair Instructions
pi to help diagnose a/c concern
Unknown Or Other 2026-07-21 · PIT5509N · Service Bulletin/Repair Instructions
this pi provides diagnostic tips for diagnosing electric trailer brakes issues.
Showing the 6 most recent of 1,118 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-05-09 · Fuel/Propulsion System“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 …”
2025-03-10 · Visibility/Wiper“the component that failed is the rear glass. yes, it is available for inspection. the rear glass defogger stopped working and melted the tabs off of the glass and burned the tabs cover. the problem has been confirmed by the dealership and i was advised there is already a recall for this but apparently my vin does not fall under the recall. …”
2024-11-10 · Electrical System“service trailer brake system warning from time to time, this warning goes off in the vehicle and when it does, it does it constantly. when the warning is dismissed, it does it again seconds later. if it is not dismissed, it does it again seconds later. it is a persistent three ding double chiming that is not only constant, the vehicle is doing it w…”
2024-10-09 · Fuel System, Diesel · 48,000 mi“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 o…”
2023-11-07 · Fuel/Propulsion System“metal in the fuel filter and throughout the fuel system, 38 codes on the computer just in 2 weeks after a full service again at the dealer. all service has been preformed at a gmc dealer since truck was serviced. 1. p026d - fuel injection quantity “a” higher then expected 2. p06cc - cylinder 8 incorrect 3. p133f - cylinder 8 glow plug offset exc…”
2023-11-02 · Fuel/Propulsion System“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…”
2023-09-12 · Wheels“driving at 70mph, thread from tire blew.. that was in july, i went and purchased another tire from bob king gmc wilmington, nc. the first tire that blew was now discontinued so i purchased another good year . on friday i noticed that another tire on my truck had a bubble along the threads again. it was also getting ready to blow like the firs…”
2023-08-21 · Steering“while braking ( after being on the highway) all dash gauges turn black, radio shuts off, ac shuts off. service stabilitrak light comes on when dash flashes back on. while driving ac turns off, radio turns off same stabilitrak warning flashes, speedometer turns off. power steer control went out while trying to turn. truck put itself in 4 wheel d…”
2023-05-30 · Engine“low coolant warning light came on. i was towing a travel trailer on a very busy roadway with no place to pull off while pulling a trailer. i had to pull over to the shoulder to check the coolant level and make sure i didn’t cause major damage to my engine by letting it overheat. while waiting to let the engine cool down, i researched and found that…”
2023-02-23 · Unknown Or Other“i have a 2018 gmc sierra duramax quad-cab and when it is connected to either my boat, stock trailer, or cargo trailer the lights and electric trailer brakes on the trailers do not work. and the chime from the "service trailer brake" indicator sounds and doesn't stop until i unplug my trailer harness from my truck making it a distraction and an unsa…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.