2024 GMC Sierra 3500HD

What owners should know

Covers 2020–2026 · 6.6L Duramax L5P diesel and 6.6L V8 gas · Updated 2026-10-01

Researched from owner forums and NHTSA complaints and written by Know Your Truck. These are patterns in what owners report, not a guarantee about any particular truck.

Common failures & how to fix them

Parts and video buttons search for your 2024 GMC Sierra 3500HD. Always confirm a part fits using your VIN. Brakes, steering, fuel and airbag work affects your safety, so if you're not sure, have a qualified mechanic do it.

• 10-speed transmission valve body failure

  Dealer (recall)

  Signs: Sudden hard downshifts, limp mode, or rear wheel lock-up on diesels.

  Fix: Covered by GM recalls on 2020–2022 diesels. Other repairs are usually under warranty on newer trucks. Ask a dealer for all open recalls and bulletins.

  May be covered free by recall 24V797000 / 26V083000. Check the VIN at nhtsa.gov/recalls.

• Trailer brake controller warnings

  Easy DIY

  Signs: 'Check trailer wiring' or 'Trailer brakes disconnected' messages that cut the trailer brakes.

  Fix: Clean and inspect the 7-pin trailer connector and the trailer's wiring first. If it continues, have a dealer check for bulletins and module updates.

  Shop: 7 pin trailer connector▶ How-to videos

• Power tailgate opens unexpectedly

  Dealer (recall)

  Signs: The tailgate unlatches by itself, often after water gets in.

  Fix: Covered by GM recalls on 2020–2024 trucks with power-unlatching tailgates.

  May be covered free by recall 24V060000 / 24V894000. Check the VIN at nhtsa.gov/recalls.

• Steering gear shaft can break (2024)

  Dealer (recall)

  Signs: Loose steering or a clunk. In rare cases loss of steering.

  Fix: Covered by a GM recall on some 2024 trucks.

  May be covered free by recall 23V549000. Check the VIN at nhtsa.gov/recalls.

Recalls

A recall doesn't mean a truck still has the problem. Enter the truck's VIN at nhtsa.gov/recalls or ask a dealer to see whether the repair was done.

• Latches/Locks/Linkages:Tailgate:Latch

  Nov 2024 · #24V894000

  General Motors, LLC (GM) is recalling certain 2024 Chevrolet Silverado HD 2500, 3500, and GMC Sierra HD 2500, 3500 vehicles equipped with power-unlatching tailgates. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in Park.

  Risk and fix

  Risk: An unlatched tailgate may open and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.

  Fix: Owners are advised to check that the tailgate is closed and latched before driving. Dealers will replace the exterior touchpad switch assemblies, free of charge. Owner notification letters were mailed December 17, 2024. 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 N242469160. This recall is an expansion of NHTSA Recall 24V-060.

• Latches/Locks/Linkages:Tailgate:Latch

  Feb 2024 · #24V060000

  General Motors, LLC (GM) is recalling certain 2020-2024 Chevrolet Silverado 2500, 3500, GMC Sierra 2500 and 3500 vehicles equipped with power-unlatching tailgates. The tailgate's electronic gate-release switch may short circuit due to water intrusion, which can result in the tailgate inadvertently unlatching while the vehicle is in park.

  Risk and fix

  Risk: An unlatched tailgate may open while driving and result in a loss of unsecured cargo, creating a road hazard and increasing the risk of a crash.

  Fix: Owners are advised to check that the tailgate is closed and latched before driving. Dealers will replace the exterior touchpad switch assemblies, free of charge. Owner notification letters were mailed May 17, 2024. 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 N232426400.

• Steering

  Aug 2023 · #23V549000

  General Motors, LLC (GM) is recalling certain 2024 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles. The steering gear shaft may fracture and disconnect from the steering arm.

  Risk and fix

  Risk: A steering arm that disconnects may result in a total loss of steering control, increasing the risk of a crash.

  Fix: Dealers will inspect and replace the steering gear, if necessary, free of charge. Owner notification letters were mailed September 22, 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 N232414720.

Owner complaints by area

Reports owners filed with NHTSA. They aren't verified, and one complaint can mention more than one area. Tap an area to read the most recent ones.

• Electrical System14

  1 involved a fire

  • Filed Sep 2026

    Vehicle lost power, seemed to slip while pulling hills, Exhaust brake didn't seem to work. Dealer determined cause by DTC P209. Tested injector circuit, found loose terminal tension at injector number 6 connector. Replaced Cylinder # 6 injector connector. Did have multiple warning lights. Also submitting because Service Bulletin 23-NA+027 covered up to 2023. Believe it's an ongoing issue since vehicle is a 2024.

  • Filed Sep 2026

    Battery voltage low and required a jump to start. Advised battery had to much resistance. Drove to dealership. Upon pulling out on to highway without warning sudden engine loss and stalls. Steering column locked and shortly after the brakes locked up making it to where the vehicle could not be moved. This is a major safety issue and WILL lead to a fatality. My drivers side door exposed to oncoming traffic on a highway. 2 tow trucks, multiple technicians to coordinate keeping jumper cables on long enough to keep the brakes functioning to move the vehicle. Once the power was lost the vehicle seized. This happens on an actual interstate or railroad crossing YOU WILL HAVE FATALITIES!! This vehicle needs an immediate recall and pulled off the road! It took 6 hours to get this truck moved! This happens on the interstate or railroad crossing and sits for that duration due to everything locking up people will die as a result!

  • Filed Jul 2026

    "The integrated trailer brake system abruptly fails while towing heavy loads, completely disabling trailer break stopping power and creating an imminent threat of highway crash and serious bodily injury." The sound system inherently stops working and will not produce sound from any device in the truck weather that be Hazards, Blinkers, Radio including AM,FM, Sirus Radio, Bluetooth or Car play as well as OnStar. The truck has been taken to a certified GMC dealer 4 times for these exact issues with also being provided the service bulletin information #N232414840 dated July 16, 2025 stating that the 2024 gmc 2500/3500 HD trucks requiring a new Trailer Break Control Module. This issue has been on going from September 2025 and still an issue as July 16, 2026 and still in the Shop today with a call back stating ready for pick up with the same module but dealer stated re flashed module. ( this is the 3rd reflash )

  • Filed Feb 2026

    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. Current diagnostic codes indicate multiple simultaneous failures including ignition relay feedback circuits, control module power faults, gateway communication loss, brake system communication faults, and battery voltage circuit errors. The dealership has diagnosed a power distribution / fuse block failure at approximately 79,000 miles. These electrical failures affect multiple vehicle systems and raise concerns regarding reliability and potential safety risks due to loss of communication between control modules and possible braking system interaction. The vehicle has been in the dealership numerous times for repairs including engine replacement, injector replacement, control module reprogramming, and electrical diagnostics. I am submitting this complaint due to concern over a potential systemic electrical defect and ongoing reliability issues.

  • Filed Jul 2025

    The contact owns a 2024 GMC Sierra 3500. The contact stated while driving at approximately 60 MPH and towing a Forest River Riverstone Legacy 5th Wheel trailer, the brake pedal was depressed to slow for oncoming stopped traffic; however, the vehicle failed to respond as needed with the “Service Trailer Brake” warning light illuminated. The contact was able to stop however, the brake pedal had to be depressed to the floorboard to slow the vehicle. The contact had taken the vehicle to a local dealer and was made aware of Customer Satisfaction Program: N232414840 - and replaced the Trailer Brake Power Module (TBPM). The vehicle was repaired; however, the failure reoccurred. The contact returned the vehicle to the same dealer and the Trailer Brake Power Module was replaced a second time. The vehicle was repaired; however, the failure reoccurred. The contact had taken the vehicle to another dealer who diagnosed the vehicle and determined that the failure was with the 5th Wheel RV. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 20,000.

  • Showing the 5 most recent of 14.
• Power Train12

  • Filed Jul 2026

    Since I purchased this truck in 2023 brand new as a 2024 the shifting has been very abrasive. It shifts far excessively harder than it should and I have brought this to the dealership’s attention many times. Now I am finding out that there is a massive recall on this vehicle’s transmission because of these issues that have been happening. The error codes are P0700 and P0747 The Engine and Transmission System is not performing as expected. An issue has been detected in the Transmission System that transfers power from the engine to the drive wheels. You may experience reduced power or shifting issues.If the vehicle is continually driven with the check engine light on, the emission controls might not work as well, the vehicle fuel economy might not be as good, and the engine might not run as smoothly. This could lead to future repairs.

  • Filed Feb 2026

    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. Current diagnostic codes indicate multiple simultaneous failures including ignition relay feedback circuits, control module power faults, gateway communication loss, brake system communication faults, and battery voltage circuit errors. The dealership has diagnosed a power distribution / fuse block failure at approximately 79,000 miles. These electrical failures affect multiple vehicle systems and raise concerns regarding reliability and potential safety risks due to loss of communication between control modules and possible braking system interaction. The vehicle has been in the dealership numerous times for repairs including engine replacement, injector replacement, control module reprogramming, and electrical diagnostics. I am submitting this complaint due to concern over a potential systemic electrical defect and ongoing reliability issues.

  • Filed Jan 2026

    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.

  • Filed Jul 2025

    I'm reaching out for urgent help regarding my 2024 GMC AT4, which is currently at Newby Buick GMC in St. George, Utah, with a transmission failure that occurred on Saturday, [XXX]. While returning from a horse show in Ogden, Utah, the truck began to experience severe transmission issues near Santaquin, Utah, around 5:30 p.m. Just before reaching Santaquin, the truck jerked violently three times-so hard that I immediately checked the camera system inside my horse trailer to make sure one of my horses hadn't gone down. That's how intense the jolt was. I pulled into a gas station in Santaquin and called the dealership right away. At the time, I had three horses on board, it was nearly 100 degrees, and I was hauling a large living quarters horse trailer. The service manager was initially unavailable, but he returned my call shortly and advised me to continue driving to St. George at a steady speed if the truck could manage it. He also warned that it might go into limp mode, and in that case, I'd just be traveling very slowly. My husband was on standby in case he needed to meet me halfway, but I was hopeful that I could make it to at least Hurricane, Utah. I was able to access my GMC app on my phone at the time and confirmed to him that the transmission check light was on, and I was receiving a warning notification on the app indicating there was a transmission issue. I was able to limp the truck as far as Hurricane, where my husband met me. We unloaded the horses into stalls and took both trucks into St. George that night to drop the AT4 off at the dealership. On Monday morning, I contacted the dealership for an update and was informed that the issue was likely related to the transmission valve, and that the required part is on national back order-with an estimated delay of two months or more, but no confirmed ETA. This has been my first GMC diesel. I've always driven Dodge trucks. Over a year ago, I saw the new color GMC released and kept telling my husband how amazi INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

  • Filed May 2025

    Battery would not hold charge and would need jump start. Transmission would not stay in gear while towing trailer and would only go to 5th or 6th gear and would jerk out of gear and oil temperatures would go to 225 degrees. Erratically shifting and while driving with cruise control stop with out warning

  • Showing the 5 most recent of 12.
• Service Brakes11

  • Filed Sep 2026

    integrated trailer brake control system goes in and out of working order while towing either one of my trailers. one being a boat trailer and the other being a travel trailer. Have taken to local GMC dealer several times and they changed the rear plug the first time, which did not fix the issue. big safety concern if I can't stop my vehicle and what I am towing. Dealer claims it is most likely trailer issue but both these trailers brakes work perfect when towed with other truck. I see that they are having a big problem with this but they claim my VIN number is not included in the recall. Yet I am having the exact same issues. I get on and off warnings TRAILER BRAKES DISABLED SERVIC REQUIRED 10 to 30 times during a one day drive. And yes the trailer brakes do not work when this happens

  • Filed Sep 2026

    Battery voltage low and required a jump to start. Advised battery had to much resistance. Drove to dealership. Upon pulling out on to highway without warning sudden engine loss and stalls. Steering column locked and shortly after the brakes locked up making it to where the vehicle could not be moved. This is a major safety issue and WILL lead to a fatality. My drivers side door exposed to oncoming traffic on a highway. 2 tow trucks, multiple technicians to coordinate keeping jumper cables on long enough to keep the brakes functioning to move the vehicle. Once the power was lost the vehicle seized. This happens on an actual interstate or railroad crossing YOU WILL HAVE FATALITIES!! This vehicle needs an immediate recall and pulled off the road! It took 6 hours to get this truck moved! This happens on the interstate or railroad crossing and sits for that duration due to everything locking up people will die as a result!

  • Filed Jul 2026

    "The integrated trailer brake system abruptly fails while towing heavy loads, completely disabling trailer break stopping power and creating an imminent threat of highway crash and serious bodily injury." The sound system inherently stops working and will not produce sound from any device in the truck weather that be Hazards, Blinkers, Radio including AM,FM, Sirus Radio, Bluetooth or Car play as well as OnStar. The truck has been taken to a certified GMC dealer 4 times for these exact issues with also being provided the service bulletin information #N232414840 dated July 16, 2025 stating that the 2024 gmc 2500/3500 HD trucks requiring a new Trailer Break Control Module. This issue has been on going from September 2025 and still an issue as July 16, 2026 and still in the Shop today with a call back stating ready for pick up with the same module but dealer stated re flashed module. ( this is the 3rd reflash )

  • Filed Jul 2026

    The contact owns a 2024 GMC Sierra 3500. The contact stated that while driving at an undisclosed speed, the front and rear brake caliper hoses collapsed. The failure caused a complete loss of braking ability. No warning lights illuminated. The vehicle was taken to a dealer where it was diagnosed that a brake hose failure caused the brake caliper hoses to collapse, impacting the brake caliper pistons. The manufacturer was made aware of the failure. The failure mileage was approximately 58,000.

  • Filed Sep 2025

    My truck is experiencing the Brake Controller failures as documented in GM Bulletin N232414840 - Customer Satisfaction Program Intermittent Loss of Trailer Brakes. This problem has occurred several times over the past year. I thought it was the wiring on my trailer - so I checked and found no problems (plus it works properly on other tow vehicles). Additionally, the problem resets and works properly after turning the truck off and back on (resets the system). It then works properly until it unexpectedly disconnects again. I thought the problem was unique to my vehicle until I got online and discovered that this is a known issue for others as well (2024 GM HD trucks). I contacted my GM dealer (and GM's customer satisfaction center as noted in the bulletin) and they informed me that my truck is not covered under this recall (not one of the covered VINs). I told them that I'm having this issue and they told me to report the problem to the NHTSA. Needless to say, GM has not included all the applicable vehicles in their recall (like mine) and I need the issue corrected before it causes a serious accident.

  • Showing the 5 most recent of 11.
• Engine8

  • Filed Sep 2026

    Vehicle lost power, seemed to slip while pulling hills, Exhaust brake didn't seem to work. Dealer determined cause by DTC P209. Tested injector circuit, found loose terminal tension at injector number 6 connector. Replaced Cylinder # 6 injector connector. Did have multiple warning lights. Also submitting because Service Bulletin 23-NA+027 covered up to 2023. Believe it's an ongoing issue since vehicle is a 2024.

  • Filed Sep 2026

    Battery voltage low and required a jump to start. Advised battery had to much resistance. Drove to dealership. Upon pulling out on to highway without warning sudden engine loss and stalls. Steering column locked and shortly after the brakes locked up making it to where the vehicle could not be moved. This is a major safety issue and WILL lead to a fatality. My drivers side door exposed to oncoming traffic on a highway. 2 tow trucks, multiple technicians to coordinate keeping jumper cables on long enough to keep the brakes functioning to move the vehicle. Once the power was lost the vehicle seized. This happens on an actual interstate or railroad crossing YOU WILL HAVE FATALITIES!! This vehicle needs an immediate recall and pulled off the road! It took 6 hours to get this truck moved! This happens on the interstate or railroad crossing and sits for that duration due to everything locking up people will die as a result!

  • Filed Feb 2026

    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. Current diagnostic codes indicate multiple simultaneous failures including ignition relay feedback circuits, control module power faults, gateway communication loss, brake system communication faults, and battery voltage circuit errors. The dealership has diagnosed a power distribution / fuse block failure at approximately 79,000 miles. These electrical failures affect multiple vehicle systems and raise concerns regarding reliability and potential safety risks due to loss of communication between control modules and possible braking system interaction. The vehicle has been in the dealership numerous times for repairs including engine replacement, injector replacement, control module reprogramming, and electrical diagnostics. I am submitting this complaint due to concern over a potential systemic electrical defect and ongoing reliability issues.

  • Filed Nov 2025

    The engine oil drained into the radiator from a flaw in there design in which outrageously high labor cost for the owner of the vehicle they put a rubber house in the radiator in which leaked without any warning indicating that there was a problem with the oil nor the radiator coolant system. repairs are in the thousand and I as a consumer should have this matter resolved at no cost due to bad design cost they should have made a oil cooler with its own separation compartment like the transmission cooler because they are replaceing everything else what about the engine itself thats still going to be contaminated like all the replacement part, seal hoses,and radiator, coolant, and thermostat. How can just parts be contaminated but not the engine? They are just replacing things that costs alot. This is a drive train issue, there were no oil in the engine.

  • Filed May 2025

    The contact owns a 2024 GMC Sierra 3500. The contact stated that the exterior lights of the vehicle were flashing erratically, and the tailgate was opening unintendedly. The contact stated that while driving at various speeds, the vehicle experienced erratic transmission shifts, and the vehicle was jerking and made an abnormal clunking sound. The check engine warning light was illuminated. The contact pulled over to a truck stop and parked the vehicle. The contact stated that the battery became fully drained while parked with the windows rolled down in snowy weather. The contact stated that after waiting 6 hours for AAA to arrive, the vehicle jump-started. The contact stated that the battery had drained on several occasions. The vehicle was taken to the dealer, where it was diagnosed that the two batteries needed to be replaced. The vehicle was repaired; however, the failure persisted, and the vehicle overheated while driving. The contact stated that GMC OnStar was contacted and informed the contact that diagnostic trouble codes related to the transmissions were retrieved. The vehicle was taken to another dealer Weston Buick GMC (22555 SE Stark St, Gresham, OR 97030) to be diagnosed. The vehicle was being diagnosed. The vehicle was not repaired and remained out of the contact's State of residence. The contact related the failure to an unknown recall; however, the VIN was not included. The manufacturer was notified of the failure and covered vehicle rental expenses that allowed the contact to return to their residence. The contact stated that the vehicle was used for load transportation, and the failure had caused both the contact and her husband to be stranded while delivering loads, which caused lodging expenses and loss of wages. The failure mileage was unknown.

  • Showing the 5 most recent of 8.
• Unknown or Other7

  1 involved a fire

  • Filed Sep 2026

    I am reporting a recurring potential safety defect involving the front fender liners on my 2024 GMC Sierra 3500. The vehicle currently has approximately 10,000 miles. During that time, at least five front fender liners have been replaced across both sides of the vehicle for the same recurring problem. During highway driving, the front fender liners appear to lose their intended shape and rigidity. Portions of the liner deform or move inward and make physical contact with the rotating front tires. The condition has continued to recur despite multiple replacement liners being installed. I am concerned that continued contact between the liner and tire can generate friction and heat and could potentially cause damage to the tire, liner, or surrounding components. Because the condition occurs at highway speeds and involves direct contact with a rotating tire, I believe it represents a potential safety issue rather than simply a cosmetic or durability problem. Replacing the liners with the same components has not permanently corrected the condition. After approximately five liner replacements in only 10,000 miles, I am concerned there may be an underlying issue involving the liner design, material rigidity, mounting method, or aerodynamic forces acting on the liner at highway speeds. I have reported the recurring issue to GMC/dealer service and am requesting that the manufacturer investigate the underlying cause rather than continue replacing the liners with identical components. I am submitting this complaint so that NHTSA has a record of the repeated failures and can determine whether similar incidents have been reported on other 2024 GMC Sierra 3500 vehicles and whether the condition warrants further investigation.

  • Filed Sep 2025

    Front wheel well liners keep falling out of place like they are melting. happens when towing and engine gets hotter than normal. Trailer is well below limit for vehicle. Liners fall onto the tire while in motion. This is the 4th time this issue has happened to my vehicle. Dealer replaces them and says it happens all the time.

  • Filed Jun 2025

    Tailgate opens when in park. Caused damage when parked in the garage. The tailgate hit the garage door. Recall under N242469160, but not attached to my VIN

  • Filed May 2025

    Windshield issues. Small debris creates significant chips and cracks on windshield. In 30 years of owning vehicles I have never had a chip. Had this vehicle one year and 3 significant cracks and three chips. Anything that hits the windshield does damage. Very dangerous issue that needs addressed. A windshield is a safety issue and one that cracks so easily is completely unsafe!

  • Filed Dec 2024

    Breaks and/or drive train. It is available for inspection. 1) Breaks sink causing slowed break time and decreased breaking ability. If the breaks are "pumped", more often than not, they will come back up to full pedal. However, in an emergency breaking situation, there is not time to "pump" the breaks. I was nearly in an accident recently when the break pedal would not stop the truck in time, due to the soft break pedal. I literally had to steer to the shoulder of the road. 2) When placing transmission in Drive or Reverse from the park position, then taking foot off of break pedal, there is about a 1 - 2 foot roll, then the truck stops as if the e-break has been engaged (but it is not engaged). By tapping the accelerator, it will "break free" (with a popping sound and a slight "jerk" in the truck) and then roll fine. This does not always happen ~ guestimate of about 10% of the time. 3) I don't know if this is related, but when I set the Drive Mode to "Normal", it automatically goes to "Off Road" ~ this happens no matter the driving conditions. This isn't safety related necessarily, however, it may be a part of the total problem.... It also decreases my fuel economy. I took the truck to the local GMC dealer/shop. They said the truck had 2 recalls and they took care of those. They believed one of the recalls would help solve the "sticking" when placing in Drive or Reverse ~ it did not. They also (supposedly) checked the breaking system and took it for a test drive. They said the breaks were fine. I doubt this happened as the soft break pedal and the need to "pump" the breaks to bring them to full pedal is completely obvious. I took the truck home after the inspection and recall. The same issues continued, so I took it back to the shop where it was inspected again. Again, I was told everything was in working order ~ it is NOT! There are no warning lights that I can find to indicate there is an issue. I'm begining to think that I should have bought a Ram Truck...

  • Showing the 5 most recent of 7.
• Steering5

  • Filed Sep 2026

    While operating my 2024 GMC Sierra EV Edition 1 at approximately 21,000 miles, a "Service Power Steering" warning appeared. Steering effort initially increased and then rapidly progressed to a near-complete loss of power steering assist. The steering wheel became extremely difficult to turn, making anything more than a gradual sweeping turn nearly impossible. I was able to safely exit the roadway into a parking lot. After shutting down and restarting the vehicle, steering assist returned to normal. No crash or injury occurred, but I believe this represents a significant safety risk because loss of steering assist at highway speed could result in loss of vehicle control.

  • Filed May 2026

    The control arm bearing appears to have failed without warning causing loss of steering control. This occurred at low speed on a street in [XXX] last night near a gas station, so the driver was able to drive to a safe location easily without risk to life. Had the failure happened at speed a possibly fatal collision would have been likely. The vehicle has been used for the past 8 months to drive to work and has not been subject to any stress. It has not been modified. The tow truck driver said he has seen a number of other control arm failures recently, not necessarily in the same vehicle type. It may be due to bad pot holes this year in [XXX] , they are bigger and deeper than normal. This information is based on assessment by tow truck driver last night. Vehicle is at Jim Shorkey in Murrysville for repairs INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

  • Filed Sep 2024

    since new there is a violent vibration in the steering wheel and floor boards. steering wheel oscillates side to side at speed from 38mph to very bad at 65mph. Dealer has had it 5 times and still cant fix it. they state the front hub extensions are out of round and have tried 3 sets without any success. this truck is not safe to drive as it will put your hands to sleep due to the vibration. Also it will cause premature system component failure. the GM forum and Duramax forum is showing many cases nation wide with this symptom. Also there is NO provision with the current 18 inch wheel to index concentrically with the mating hubs on all four wheel locations This is mainly affection the Dually wheel Denali or high-country vehicles

  • Filed Jun 2024

    The contact owns a 2024 GMC Sierra 3500 equipped with Michelin Tires, Tire Line: Primacy, Tire Size: LT235/80/R18, DOT Number: (Not Available). The contact stated that while driving at an undisclosed speed, the passenger’s side front tire tread was separating, and the vehicle was vibrating. The contact stated that the inner rim was bent, and additionally, the steering gear box was leaking. The steering wheel was uncontrollable. There were no warning lights illuminated. The vehicle was taken to the local dealer on several occasions and was diagnosed that the steering gear box was leaking and needed to be replaced. The contact also stated that the air bag chip was inoperable. The vehicle was repaired, but the failure recurred. The manufacturer was contacted and opened a case. The contact was seeking a buyback. The tire and vehicle failure mileage was approximately 250.

  • Filed Dec 2023

    The vehicle has had steering and alignment issues since the day I purchased the truck. The steering wheel is not centered. The steering wheel is always turned to the left but the vehicle pulls to the right. I have had it at my local dealership five times and they have confirmed what I have described but they are not able to fix the issue fully. They have rotated the tires 3 times and have aligned it all five times. The vehicle will be good for about 100 miles and will go out of alignment again. The dealership explained to me that they are experiencing this with all 2024 Chevy and GMC heavy duty trucks. The vehicle is very difficult to keep straight especially at higher speeds on the interstate. I am part of a 2024 Chevy and GMC owners facebook page and hundreds of consumers are complaining of the same issue.

• Fuel/Propulsion System4

  • Filed Sep 2026

    Vehicle lost power, seemed to slip while pulling hills, Exhaust brake didn't seem to work. Dealer determined cause by DTC P209. Tested injector circuit, found loose terminal tension at injector number 6 connector. Replaced Cylinder # 6 injector connector. Did have multiple warning lights. Also submitting because Service Bulletin 23-NA+027 covered up to 2023. Believe it's an ongoing issue since vehicle is a 2024.

  • Filed May 2026

    Transmission valve body failure contestant with Recall # N242454440. Dealer diagnosed valve body failure and corrective action of Valve body rebuild. I would like 2024 models to be included with this recall for proper repair per Special Coverage # N242454441.

  • Filed Apr 2026

    The service department has identified "gasoline contamination" as the cause of a fuel system failure; however, this diagnosis is directly contradicted by both the shop’s internal test results and independent laboratory analysis.the shop performed an API Gravity test and a Styrofoam cup test.•API Gravity Result (35): According to GM Service Information (GMSi), the standard API range for #2 diesel is 30–39. result of 35 is a textbook "pass" for clean diesel. Gasoline contamination would typically spike this number into the 50s.GMSi protocol indicates that gasoline-contaminated diesel will melt a cup within 30 minutes.results only provided a "softened bottom," which is an inconclusive result per GMSi standards.Sinclair Refinery lab confirms the fuel sample taken from my vehicle is within 100% of factory specifications for diesel, with zero gasoline or DEF detected.Violation of GM Service Protocols even assuming the shop’s diagnosis of contamination was correct, the repair performed deviates dangerously from GMSi requirementsFor a 2024 L5P Duramax that has been cranked with contaminated fuel, GMSi (e.g., Bulletin 16-NA-376) mandates the replacement of the entire high-pressure fuel system, including the pump, both fuel rails, and all eight fuel injectors. shop replaced only the pump and cleaned the lines. This "partial repair" is not a GM-approved recovery procedure for contamination. Reusing potentially contaminated injectors and rails is the primary cause of catastrophic repeat failures.This clearly falls under warranty work and I should not had been charged for this repair. The dealership refusing to acknowledge my concerns and evidence is not only dangerous to the safety of myself and passengers, but raises concern for my vehicles future maintenance status, both inside and out of warranty. This shows a deceptive business practice and complete lack of accountability, compassion and moral understanding for the customer.I am owed a full refund and a warranty claim open

  • Filed Oct 2024

    First incident we were driving on the interstate towing a fifth wheel RV, and several warning lights illuminated before everything just shut down. Manage to get to the side of the road. Vehicle finally restarted and the rest of the trip was uneventful. Second incident, vehicle had not run for two days, got in and while the starter cranks, the engine will not start or run. Engine/Transmission service and fuel system service messages showing on app and on email from OnStar. Vehicle requires towing to dealer.

• Structure4

  • Filed Sep 2025

    Front wheel well liners keep falling out of place like they are melting. happens when towing and engine gets hotter than normal. Trailer is well below limit for vehicle. Liners fall onto the tire while in motion. This is the 4th time this issue has happened to my vehicle. Dealer replaces them and says it happens all the time.

  • Filed Mar 2025

    The Vader Chrome on the front of vehicle is peeling. This includes the grille and surrounding areas. This area has been inspected by a representative at GMC and at a dealership. GMC refuses to stand by their product.

  • Filed Oct 2024

    On at least 5 occasions, my inner tailgate has released itself and gone down during motion. This has been uncommanded. It appears GM has a recall for this but it does not include my truck. The dealership that looked into it agrees this is likely the same issue and GM should include it in the recall.

  • Filed Jul 2024

    1 - the failed component is the tailgate. The tailgate lowers automatically without any input from me while the vehicle is in operation. It has happened three times since buying the truck in February 2024. 2 - During the third event, I was backing up my Airstream trailer into its storage building when the tailgate dropped. At that time, I was negotiating a sharp turn in reverse and the tailgate came in contact with my trailer's propane tank housing. Both the tailgate and the propane tank housing were damaged (see photos). 3 - It was not until recently that I learned of a recall for the same condition on other trucks like mine, but for some reason my truck doesn't seem to be included even though it has the same condition as those trucks that are included. The tailgate and my trailer have not yet been inspected by any third parties (manufacturer, police, insurance, etc.), and no repairs have been made yet. 4 - There were no warning signals (either visible or audible) that the tailgate was down while the truck was in operation.

• Latches/Locks/Linkages2

  • Filed Aug 2026

    The contact owns a 2024 GMC Sierra 3500. The contact stated that the tailgate frequently opened independently while the vehicle was parked. The vehicle was previously repaired under NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages); however, the failure persisted. The vehicle was not diagnosed or repaired by a dealer or an independent mechanic. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 40,600.

  • Filed Jun 2024

    The contact owns a 2024 GMC Sierra 3500. The contact received notification of NHTSA Campaign Number: 24V060000 (Latches/Locks/Linkages); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.

• Hydraulic2

  • Filed Jul 2026

    The contact owns a 2024 GMC Sierra 3500. The contact stated that while driving at an undisclosed speed, the front and rear brake caliper hoses collapsed. The failure caused a complete loss of braking ability. No warning lights illuminated. The vehicle was taken to a dealer where it was diagnosed that a brake hose failure caused the brake caliper hoses to collapse, impacting the brake caliper pistons. The manufacturer was made aware of the failure. The failure mileage was approximately 58,000.

  • Filed Jul 2025

    The contact owns a 2024 GMC Sierra 3500. The contact stated while driving at approximately 60 MPH and towing a Forest River Riverstone Legacy 5th Wheel trailer, the brake pedal was depressed to slow for oncoming stopped traffic; however, the vehicle failed to respond as needed with the “Service Trailer Brake” warning light illuminated. The contact was able to stop however, the brake pedal had to be depressed to the floorboard to slow the vehicle. The contact had taken the vehicle to a local dealer and was made aware of Customer Satisfaction Program: N232414840 - and replaced the Trailer Brake Power Module (TBPM). The vehicle was repaired; however, the failure reoccurred. The contact returned the vehicle to the same dealer and the Trailer Brake Power Module was replaced a second time. The vehicle was repaired; however, the failure reoccurred. The contact had taken the vehicle to another dealer who diagnosed the vehicle and determined that the failure was with the 5th Wheel RV. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 20,000.

• Wheels2

  • Filed May 2026

    The control arm bearing appears to have failed without warning causing loss of steering control. This occurred at low speed on a street in [XXX] last night near a gas station, so the driver was able to drive to a safe location easily without risk to life. Had the failure happened at speed a possibly fatal collision would have been likely. The vehicle has been used for the past 8 months to drive to work and has not been subject to any stress. It has not been modified. The tow truck driver said he has seen a number of other control arm failures recently, not necessarily in the same vehicle type. It may be due to bad pot holes this year in [XXX] , they are bigger and deeper than normal. This information is based on assessment by tow truck driver last night. Vehicle is at Jim Shorkey in Murrysville for repairs INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

  • Filed Sep 2024

    since new there is a violent vibration in the steering wheel and floor boards. steering wheel oscillates side to side at speed from 38mph to very bad at 65mph. Dealer has had it 5 times and still cant fix it. they state the front hub extensions are out of round and have tried 3 sets without any success. this truck is not safe to drive as it will put your hands to sleep due to the vibration. Also it will cause premature system component failure. the GM forum and Duramax forum is showing many cases nation wide with this symptom. Also there is NO provision with the current 18 inch wheel to index concentrically with the mating hubs on all four wheel locations This is mainly affection the Dually wheel Denali or high-country vehicles

• Engine And Engine Cooling1

  • Filed Mar 2026

    The contact owns a 2024 GMC Sierra 3500HD. The contact stated that while driving at various speeds, there would be a diesel odor coming into the cabin of the vehicle. The failure had become more persistent, causing black smoke to enter the cabin of the vehicle. The failure caused the contact and other vehicle passengers to have headaches, nausea, and dizziness. While driving approximately 65 MPH, the contact began speaking to their daughter, sitting in the front passenger seat, and noticed her not responding. When looking over, the contact noticed her daughter's head was lowered. The contact immediately pulled over to the side of the road, where she pulled her daughter out of the vehicle and called an ambulance. A fire truck was also dispatched in order to drive the vehicle to the fire department, where they tested the vehicle; however, they were unable to duplicate the failure. The contact's daughter was taken to the hospital, where it was determined that she had suffered from carbon dioxide poisoning. The vehicle was taken to the dealer, who diagnosed that the Diesel Particulate Filter (DPF) was clogged, and that the Exhaust Manifold and Turbo Inlet were both fractured, causing a blockage in the Engine Bank. It was determined that all the avenues through which air and carbon should have been exiting the vehicle had failed and were causing everything to come into the cabin of the vehicle instead. The vehicle was scheduled for repair; however, only the exhaust manifold could be repaired, while the other parts, such as the DPF and hose, were on national backorder and awaiting retrieval. The manufacturer was informed of the failure, and a case was opened. The contact stated the manufacturer had been avoiding acknowledging that black smoke had been entering the vehicle's cabin and had yet to resolve that issue. The failure mileage was approximately 20,000.

• Fuel System1

  • Filed Mar 2026

    The contact owns a 2024 GMC Sierra 3500HD. The contact stated that while driving at various speeds, there would be a diesel odor coming into the cabin of the vehicle. The failure had become more persistent, causing black smoke to enter the cabin of the vehicle. The failure caused the contact and other vehicle passengers to have headaches, nausea, and dizziness. While driving approximately 65 MPH, the contact began speaking to their daughter, sitting in the front passenger seat, and noticed her not responding. When looking over, the contact noticed her daughter's head was lowered. The contact immediately pulled over to the side of the road, where she pulled her daughter out of the vehicle and called an ambulance. A fire truck was also dispatched in order to drive the vehicle to the fire department, where they tested the vehicle; however, they were unable to duplicate the failure. The contact's daughter was taken to the hospital, where it was determined that she had suffered from carbon dioxide poisoning. The vehicle was taken to the dealer, who diagnosed that the Diesel Particulate Filter (DPF) was clogged, and that the Exhaust Manifold and Turbo Inlet were both fractured, causing a blockage in the Engine Bank. It was determined that all the avenues through which air and carbon should have been exiting the vehicle had failed and were causing everything to come into the cabin of the vehicle instead. The vehicle was scheduled for repair; however, only the exhaust manifold could be repaired, while the other parts, such as the DPF and hose, were on national backorder and awaiting retrieval. The manufacturer was informed of the failure, and a case was opened. The contact stated the manufacturer had been avoiding acknowledging that black smoke had been entering the vehicle's cabin and had yet to resolve that issue. The failure mileage was approximately 20,000.

• Diesel1

  • Filed Mar 2026

    The contact owns a 2024 GMC Sierra 3500HD. The contact stated that while driving at various speeds, there would be a diesel odor coming into the cabin of the vehicle. The failure had become more persistent, causing black smoke to enter the cabin of the vehicle. The failure caused the contact and other vehicle passengers to have headaches, nausea, and dizziness. While driving approximately 65 MPH, the contact began speaking to their daughter, sitting in the front passenger seat, and noticed her not responding. When looking over, the contact noticed her daughter's head was lowered. The contact immediately pulled over to the side of the road, where she pulled her daughter out of the vehicle and called an ambulance. A fire truck was also dispatched in order to drive the vehicle to the fire department, where they tested the vehicle; however, they were unable to duplicate the failure. The contact's daughter was taken to the hospital, where it was determined that she had suffered from carbon dioxide poisoning. The vehicle was taken to the dealer, who diagnosed that the Diesel Particulate Filter (DPF) was clogged, and that the Exhaust Manifold and Turbo Inlet were both fractured, causing a blockage in the Engine Bank. It was determined that all the avenues through which air and carbon should have been exiting the vehicle had failed and were causing everything to come into the cabin of the vehicle instead. The vehicle was scheduled for repair; however, only the exhaust manifold could be repaired, while the other parts, such as the DPF and hose, were on national backorder and awaiting retrieval. The manufacturer was informed of the failure, and a case was opened. The contact stated the manufacturer had been avoiding acknowledging that black smoke had been entering the vehicle's cabin and had yet to resolve that issue. The failure mileage was approximately 20,000.

• Forward Collision Avoidance1

  • Filed May 2025

    Battery would not hold charge and would need jump start. Transmission would not stay in gear while towing trailer and would only go to 5th or 6th gear and would jerk out of gear and oil temperatures would go to 225 degrees. Erratically shifting and while driving with cruise control stop with out warning

• Visibility/Wiper1

  • Filed May 2025

    Windshield issues. Small debris creates significant chips and cracks on windshield. In 30 years of owning vehicles I have never had a chip. Had this vehicle one year and 3 significant cracks and three chips. Anything that hits the windshield does damage. Very dangerous issue that needs addressed. A windshield is a safety issue and one that cracks so easily is completely unsafe!

• Vehicle Speed Control1

  • Filed Oct 2024

    On multiple occasions, the vehicle has suffered from a severe computer failure. This results in the driver information center losing all data, the climate system shutting down, loss of all driver assistance features, loss of computer based safety systems, and prevents the vehicle from shutting down or being restarted until the batteries are disconnected. This results in the driver having no information about speed or engine parameters while driving. This error has not been reproducible by the dealer however they were able to assess it while one error occurred while driving by them. Their diagnostics show a complete failure of all 3 data buses and failure of the serial data gateway. Troubleshooting thus far has been unsuccessful. During the failure, all errors possible are lit on the warning lamps and the driver information center displays warnings for all vehicle modules. The attached photo was taken during one of the events after pulling off the freeway. While traveling at freeway speeds, the information on the screen was the same indicating no speed. This presents numerous safety risks.

• Back Over Prevention1

  • Filed Oct 2024

    On multiple occasions, the vehicle has suffered from a severe computer failure. This results in the driver information center losing all data, the climate system shutting down, loss of all driver assistance features, loss of computer based safety systems, and prevents the vehicle from shutting down or being restarted until the batteries are disconnected. This results in the driver having no information about speed or engine parameters while driving. This error has not been reproducible by the dealer however they were able to assess it while one error occurred while driving by them. Their diagnostics show a complete failure of all 3 data buses and failure of the serial data gateway. Troubleshooting thus far has been unsuccessful. During the failure, all errors possible are lit on the warning lamps and the driver information center displays warnings for all vehicle modules. The attached photo was taken during one of the events after pulling off the freeway. While traveling at freeway speeds, the information on the screen was the same indicating no speed. This presents numerous safety risks.

• Air Bags1

  • Filed Jun 2024

    The contact owns a 2024 GMC Sierra 3500 equipped with Michelin Tires, Tire Line: Primacy, Tire Size: LT235/80/R18, DOT Number: (Not Available). The contact stated that while driving at an undisclosed speed, the passenger’s side front tire tread was separating, and the vehicle was vibrating. The contact stated that the inner rim was bent, and additionally, the steering gear box was leaking. The steering wheel was uncontrollable. There were no warning lights illuminated. The vehicle was taken to the local dealer on several occasions and was diagnosed that the steering gear box was leaking and needed to be replaced. The contact also stated that the air bag chip was inoperable. The vehicle was repaired, but the failure recurred. The manufacturer was contacted and opened a case. The contact was seeking a buyback. The tire and vehicle failure mileage was approximately 250.

• Tires1

  • Filed Jun 2024

    The contact owns a 2024 GMC Sierra 3500 equipped with Michelin Tires, Tire Line: Primacy, Tire Size: LT235/80/R18, DOT Number: (Not Available). The contact stated that while driving at an undisclosed speed, the passenger’s side front tire tread was separating, and the vehicle was vibrating. The contact stated that the inner rim was bent, and additionally, the steering gear box was leaking. The steering wheel was uncontrollable. There were no warning lights illuminated. The vehicle was taken to the local dealer on several occasions and was diagnosed that the steering gear box was leaking and needed to be replaced. The contact also stated that the air bag chip was inoperable. The vehicle was repaired, but the failure recurred. The manufacturer was contacted and opened a case. The contact was seeking a buyback. The tire and vehicle failure mileage was approximately 250.

Safety ratings

NHTSA 5-Star Safety Ratings from government crash tests. Ratings can differ by cab style and 2WD/4WD.

NHTSA hasn't published star ratings for this truck. Many heavy-duty pickups aren't included in NHTSA's crash-test program, so this doesn't mean the truck is unsafe.