2018 GMC Sierra 2500 Problems, Complaints & Recalls
- Compared with other Sierra 2500 years
- Fewer complaints than other years 20th of 30 for complaints
- Safety recalls
- 5 recalls: check your VIN
- NHTSA crash rating
- 4 out of 5 stars
Owners have filed 35 complaints with NHTSA about the 2018 GMC Sierra 2500. That ranks 20th out of 30 Sierra 2500 model years for complaints. The most reported problem area is engine (8 complaints, 23%), typically at around 5,641 miles. Complaints mention 2 fires. There are 5 safety recalls covering this model year.
- 35owner complaints
- 5safety recalls
- 0NHTSA investigations
- 0complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2018 GMC Sierra 2500 problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Engine | 8 | 23% | 5,641 | — | — |
| Electrical System | 7 | 20% | 28,000 | — | — |
| Fuel/propulsion System | 5 | 14% | 3,500 | — | — |
| Unknown or Other | 5 | 14% | 1,000 | — | — |
| Equipment | 4 | 11% | 30,600 | — | — |
| Exterior Lighting | 4 | 11% | 18,000 | — | — |
| Power Train | 3 | 9% | 9,664 | — | — |
| Tires | 3 | 9% | 8,000 | — | — |
| Visibility/wiper | 2 | 6% | — | — | — |
| Back Over Prevention | 1 | 3% | — | — | — |
| Fuel System, Diesel | 1 | 3% | 48,000 | — | — |
| Seat Belts | 1 | 3% | 3,500 | — | — |
| Steering | 1 | 3% | — | — | — |
| Wheels | 1 | 3% | — | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2018 GMC Sierra 2500 recalls (5)
Tap a recall to see the problem, the risk and the fix.
Air bags:side/window:curtain:inflator
Problem: 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
Problem: 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
Problem: 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. Interim owner notifications were mailed on August 13, 2021. Owner notification letters are expected to be mailed on April 4, 2022. Customers may call GMC customer service at 1-800-462-8782. GM's number for this recall is 212329840.
Engine
Problem: 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
Problem: 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.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
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…
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…
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…
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…
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 âAâ Higher then expected 2. P06CC - cylinder 8…
Other GMC Sierra 2500 years
← 2017 Sierra 2500 · 2019 Sierra 2500 →
| Year | Complaints | Recalls |
|---|---|---|
| 2026 Sierra 2500 | 10 | 1 |
| 2025 Sierra 2500 | 28 | 1 |
| 2024 Sierra 2500 | 106 | 4 |
| 2023 Sierra 2500 | 33 | 1 |
| 2022 Sierra 2500 | 43 | 3 |
| 2021 Sierra 2500 | 52 | 6 |
| 2020 Sierra 2500 | 78 | 9 |
| 2019 Sierra 2500 | 32 | 7 |
| 2018 | 35 | 5 |
| 2017 Sierra 2500 | 37 | 6 |
| 2016 Sierra 2500 | 59 | 6 |
| 2015 Sierra 2500 | 89 | 6 |
| 2014 Sierra 2500 | 30 | 2 |
| 2013 Sierra 2500 | 46 | 3 |
| 2012 Sierra 2500 | 31 | 3 |
| 2011 Sierra 2500 | 63 | 4 |
| 2010 Sierra 2500 | 10 | 5 |
| 2009 Sierra 2500 | 31 | 5 |
| 2008 Sierra 2500 | 63 | 3 |
| 2007 Sierra 2500 | 83 | 3 |
| 2006 Sierra 2500 | 66 | 1 |
| 2005 Sierra 2500 | 115 | 1 |
| 2004 Sierra 2500 | 143 | 1 |
| 2003 Sierra 2500 | 160 | 0 |
| 2002 Sierra 2500 | 134 | 1 |
| 2001 Sierra 2500 | 134 | 2 |
| 2000 Sierra 2500 | 48 | 1 |
| 1999 Sierra 2500 | 36 | 0 |
| 1998 Sierra 2500 | 15 | 1 |
| 1997 Sierra 2500 | 14 | 2 |
See all GMC Sierra 2500 problems by year, every GMC model, or the GMC VIN decoder.
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Frequently asked questions
What are the most common problems with the 2018 GMC Sierra 2500?
Owners most often report engine, electrical system, fuel/propulsion system problems. The top one, engine, accounts for 8 complaints.
Was there a recall on the 2018 GMC Sierra 2500?
Yes, 5 safety recalls. Enter your VIN at NHTSA.gov to check whether the repairs were done on your car.
Was the 2018 GMC Sierra 2500 a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Sierra 2500 model years, the 2018 has fewer complaints than most years, and NHTSA rates it 4 out of 5 stars overall in crash tests. Always get a pre-purchase inspection and check the VIN for open recalls.