https://plaincars.com/make/gmc-sierra-3500 New NHTSA complaints and recalls filed for the GMC Sierra 3500. en-us Sat, 12 Sep 2026 05:03:44 GMT https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#recall-26V325000-gmc-gmc-sierra-3500-2019 Thu, 21 May 2026 00:00:00 GMT General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2019 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles. The left-side or right-side roof rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2177670 Tue, 17 Feb 2026 00:00:00 GMT This 2024 GMC Sierra Heavy Duty has experienced a continuous pattern of major mechanical and electrical failures since early ownership. The vehicle required a complete engine replacement under warranty at approximately 43,626 miles. Since that time, the vehicle has continued to experience repeated injector failures, control module faults, communication errors, and voltage-related system issues. C https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2177671 Tue, 17 Feb 2026 00:00:00 GMT This 2024 GMC Sierra Heavy Duty has experienced a continuous pattern of major mechanical and electrical failures since early ownership. The vehicle required a complete engine replacement under warranty at approximately 43,626 miles. Since that time, the vehicle has continued to experience repeated injector failures, control module faults, communication errors, and voltage-related system issues. C https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2177672 Tue, 17 Feb 2026 00:00:00 GMT This 2024 GMC Sierra Heavy Duty has experienced a continuous pattern of major mechanical and electrical failures since early ownership. The vehicle required a complete engine replacement under warranty at approximately 43,626 miles. Since that time, the vehicle has continued to experience repeated injector failures, control module faults, communication errors, and voltage-related system issues. C https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2171829 Sat, 31 Jan 2026 00:00:00 GMT Rear wheel lockup event in traffic while towing 24000lb 5th wheel on freeway. Vehicle was limped to a dealer, diagnosed as a transmission valve body failure. Repair took over 1 month stranding us over 1500 from home while on a trip. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2171532 Fri, 30 Jan 2026 00:00:00 GMT The front impact sensor, also known as a crash sensor (part # 10370150), is no longer functional. It detects rapid vehicle deceleration during a frontal collision and sends an immediate signal to the Airbag Control Unit (ACU) to deploy airbags. Located behind the front bumper or on the radiator support, these sensors measure impact severity to ensure airbags deploy only when necessary. This part i https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2171528 Fri, 30 Jan 2026 00:00:00 GMT The truck automatically engages the parking brake ONLY when on an incline, never at any other time. I am so used to engaging the parking brake at all other times I also engage it when on an incline. The problem is the truck DISENGAGES the brake automatically after I've engaged it. This has happened multiple times when I've been towing a large boat on a launch ramp or towing my heavy 5th wheel. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2171011 Wed, 28 Jan 2026 00:00:00 GMT I was driving in the high way and the vehicle started having issues and then it completely shut off and wouldn’t drive or anything in the middle of the highway and the dash said it was reducing power. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2171012 Wed, 28 Jan 2026 00:00:00 GMT I was driving in the high way and the vehicle started having issues and then it completely shut off and wouldn’t drive or anything in the middle of the highway and the dash said it was reducing power. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2171013 Wed, 28 Jan 2026 00:00:00 GMT I was driving in the high way and the vehicle started having issues and then it completely shut off and wouldn’t drive or anything in the middle of the highway and the dash said it was reducing power. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2169166 Fri, 23 Jan 2026 00:00:00 GMT My truck is affected by GM’s engine block‑heater safety recall (NHTSA 21V‑496 / GM N212329840) addressing a risk of short circuit and potential engine‑compartment fire at the heater cord/terminal connection. GM’s interim action has been to remove/disable the block‑heater cord, which my dealer did, and then marked the recall “completed.” As a result, the NHTSA VIN tool shows 0 unrepaired recalls, e https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2169167 Fri, 23 Jan 2026 00:00:00 GMT My truck is affected by GM’s engine block‑heater safety recall (NHTSA 21V‑496 / GM N212329840) addressing a risk of short circuit and potential engine‑compartment fire at the heater cord/terminal connection. GM’s interim action has been to remove/disable the block‑heater cord, which my dealer did, and then marked the recall “completed.” As a result, the NHTSA VIN tool shows 0 unrepaired recalls, e https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2168513 Wed, 21 Jan 2026 00:00:00 GMT Diesel exhaust fluid tank heater malfunctioned and meted tank and connectors. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2168514 Wed, 21 Jan 2026 00:00:00 GMT Diesel exhaust fluid tank heater malfunctioned and meted tank and connectors. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2166539 Thu, 15 Jan 2026 00:00:00 GMT I have a 2023 GMC Sierra HD3500 6.6 Duramax. February of 2025 the valve body failed after 23,000 miles. The failure happened when the transmission had an extremely hard shift at 55 mph and then went into 5 gear limp mode. Computer through code P0700 and P0747. The P0747 is the code that tells you the valve body failed. When I took the truck to the dealer, they would not let me take the truck home https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2165702 Tue, 13 Jan 2026 00:00:00 GMT On Christmas Day 2025 my Tailgate flies open on its own and I see my cargo flying out and a piece of it bounced off my taillight passenger side braking the taillight and then when attempting to pull over my lane departing feature try’s to correct its self and I hit the median luckily at slower than I was going but enough to make a decent dent on front bumper https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2165703 Tue, 13 Jan 2026 00:00:00 GMT On Christmas Day 2025 my Tailgate flies open on its own and I see my cargo flying out and a piece of it bounced off my taillight passenger side braking the taillight and then when attempting to pull over my lane departing feature try’s to correct its self and I hit the median luckily at slower than I was going but enough to make a decent dent on front bumper https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2165704 Tue, 13 Jan 2026 00:00:00 GMT On Christmas Day 2025 my Tailgate flies open on its own and I see my cargo flying out and a piece of it bounced off my taillight passenger side braking the taillight and then when attempting to pull over my lane departing feature try’s to correct its self and I hit the median luckily at slower than I was going but enough to make a decent dent on front bumper https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2164358 Thu, 08 Jan 2026 00:00:00 GMT Our Dash board cracked very badly from the top next to the speaker to the passenger side air bag. We purposely use a dash board cover and never place heavy things on it. This is a safety issue as if getting in an accident wouldn’t be bad enough flying shrapnel would be worse. We just had it fixed at a dealership to the tune of $2500. This is not okay as I see this is a constant problem. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2164359 Thu, 08 Jan 2026 00:00:00 GMT Our Dash board cracked very badly from the top next to the speaker to the passenger side air bag. We purposely use a dash board cover and never place heavy things on it. This is a safety issue as if getting in an accident wouldn’t be bad enough flying shrapnel would be worse. We just had it fixed at a dealership to the tune of $2500. This is not okay as I see this is a constant problem. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2159473 Mon, 22 Dec 2025 00:00:00 GMT Oil cooler for truck is defective and thus allowed all oil to be mixed with the coolant. GM is stating they will flush engine and replace with exact same part. Very common issue and sad to have a $100k truck and it is junk. https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2158693 Thu, 18 Dec 2025 00:00:00 GMT Approximately Nov 15, 2024 is when the issue started. At approximately 44,000 miles the truck experienced a catastrophic oil coolant failure causing oil and coolant to mix. It is available for inspection. The incident happened suddenly as the truck was being driven. When pressing on the accelerator, the truck hesitated to move on several occasions. The issue was confirmed by an authorized GMC ser https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2158507 Thu, 18 Dec 2025 00:00:00 GMT Picked up vehicle from Dealership new, with 12miles on the odometer. During the trip home (over 150+ miles each way) and at 54 miles a "Forward Collision System Unavailable" warning message appeared on the dash. Stopped for coffee and restarted the vehicle and the error cleared. It re-appeared at 235 miles, and again at 427 miles along with an OBD error P0700 @cycle#763, Occurrence Cycle #2608. R https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2157753 Tue, 16 Dec 2025 00:00:00 GMT 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 me at the time. Could feel a difference when I was attempting to brake and exit the freeway. Had to a https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2157754 Tue, 16 Dec 2025 00:00:00 GMT 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 me at the time. Could feel a difference when I was attempting to brake and exit the freeway. Had to a https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2157755 Tue, 16 Dec 2025 00:00:00 GMT 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 me at the time. Could feel a difference when I was attempting to brake and exit the freeway. Had to a https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2152619 Sat, 29 Nov 2025 00:00:00 GMT “I own a 2025 GMC Sierra with 30,000 miles. The oil cooler failed and caused loss of oil pressure and potential internal engine damage. The dealership acknowledges the failure but refuses to escalate the case or perform a proper inspection. I am being instructed to continue driving the truck even though it may suffer catastrophic failure while driving. This is a safety hazard.” https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2152203 Wed, 26 Nov 2025 00:00:00 GMT The integrated wirless phone charger when charging my phone always the phone to get very hot and puts my phone into overheating protcol. The safety concern is that this charger could overheat my phones battery and cause a fire with in the cab of the vehicle. This could cause an imminent threat to the safety of all persons in the vehicle. The issue was reproduced to the dealer that does my regular https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2151602 Mon, 24 Nov 2025 00:00:00 GMT During takeoff the transmission acted as if it was in neutral while I was crossing traffic luckily, the semi truck that was coming towards me was able to stop. I had the vehicle towed to a shop. After the vehicle was towed to the shop the transmission acted normal when the mechanic searched the VIN number. There was a service bulletin issued by General Motors for this exact problem. Had the semi https://plaincars.com/make/gmc-sierra-3500 https://plaincars.com/make/gmc-sierra-3500#complaint-2150521 Thu, 20 Nov 2025 00:00:00 GMT The contact owned a 2019 GMC Sierra 3500. The contact stated that while driving during a rain storm at approximately 60 MPH, the vehicle hydroplaned. The contact stated that the vehicle swerved to the right and then to the left. The contact stated that the vehicle drove off the road and down an embankment. The contact stated that he drove over a mound, and the vehicle was launched into the air, an