Engine And Engine Cooling Problems of GMC Sierra 3500

The contact owns a 2023 GMC Sierra 3500. The contact stated that while driving approximately 60 mph, the messages "service charging system" and "service diesel emissions system" were displayed and suddenly the power steering and power brakes malfunctioned, causing the contact to almost lose control of the vehicle. The cause of the failure was not yet determined. The local dealer was notified of the failure. The manufacturer was not yet contacted. The failure mileage was 79,000.

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The engine seized at 65mph. Available for inspection. Was left stranded in a limited access area with no cell service. There was no warning, the engine just stopped at highway speed and would not restart. The problem was confirmed by an independent service center. They couldnt identify which component had failed without a costly teardown. Occurred at 112,000 miles, past the 100,000 mile powertrain warranty.

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Engine started skipping, then service parking brake light came on, then service engine light came on and speed dropped to 44 mph.

The contact owns a 2024 GMC Sierra 3500. The contact stated that while driving at various speeds, there was an abnormal knocking sound coming from the vehicle. There were no warning lights illuminated. The vehicle was taken to a local dealer where it was diagnosed; however, the cause of the failure was not yet determined. The contact was advised by the local dealer that the engine might need to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.

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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.

This vehicle is garage kept and meticulous maintained, has 136,000 miles, original owner, brought to dealer for an oil leak, they said exhaust are frozen and won't come out after heating etc. They have to replace exhaust manifolds! bolts should not seize is the head of a garage kept vehicle that's heated! being a mechanic many years ago I have never seen this happen! this is the first year for the new engine, on a internet search I found it's not uncommon, and the bill is going to cost me over $8000 !. Thank you, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2017 GMC Sierra 3500 🔎.

Driving my vehicle in the mountains pulling a 16000 lb 5th wheel trailer, the engine goes into reduced engine power due to a turbo vane position sensor / turbo over boost or under boost fault. This has happened 4 times in the last 3 months and has nearly caused an accident following each occurrence. The vehicle is a 2016 GMC Sierra 3500hd with the 6. 6l lml duramax diesel engine with 75000 miles. I believe the reduced engine power protection is far to abrupt in the loss of engine power to safely move the vehicle out of the flow of traffic. During each occurrence I was in the left lane of a 2 lane expressway attempting to pass a much slower vehicle going up a 5-8% grade and was unable to complete my pass due to the loss in propulsion which nearly caused an accident.

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The contact owns a 2020 GMC Sierra 3500. The contact stated while driving approximately 60 mph, the vehicle jerked, lost motive power, and almost stopped unintendedly. There was no warning light illuminated. The contact was able to pull into a parking lot, where the vehicle shut off. The contact stated that while attempting to restart the vehicle, the diagnostic trouble code: p129f was displayed, and the vehicle failed to restart. The vehicle was towed to the residence. The local dealer was contacted and advised the contact that the failure might be related to the fuel pump control module and that the part was on backorder. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 19,000.

I purchased my vehicle in 2019. Since then, I have had several issues. I've had to replace the coolant reservoir, def heater/pump and twice changed the number 8 injector plug. The warning light came on just after the warranty went out. The code reader read the ambient sensor and no sensor.

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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.

The contact owns a 2016 GMC Sierra 3500. The contacted stated that while her husband was attempting to start the vehicle, the contact stated that after five minutes the engine independently failed while the vehicle was running. No warning light was illuminated. The vehicle was towed to an independent mechanic where it was diagnosed and determined that the fuel system and fuel pump needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure but offered no assistance. The contact was transferred to the NHTSA hotline to report the failure. The approximate failure mileage was 100,000.

Multiple instances of diesel engine emissions system parts and software failure. While driving, towing or not, the dic would randomly display a message that the def level is low and reduced speed will occur in x-amount of miles and that mileage would then begin a visible countdown on the dic, sometimes much more quickly than the actual speed I was traveling. In other words, it might at first state 500 miles remaining, but then be counting down from 500 miles by one mile per second of time, or faster. Each instance, I would park and attempt to refill the def tank, only to discover that the tank is already full or near full. My truck’s def tank has now been replaced twice under warranty with the latest tank being installed at only 35,460 miles on the odometer. During the latest replacement, the technician also diagnosed and replaced the electrical wiring harness related to the def tank, stating that one of the connector pins was not reading the required voltage. There was also a faulty diesel particulate sensor that was replaced under warranty. This emissions system is problematic, and it is unsafe to due to the drive ability restrictions it imposes due to faulty software and equipment. I use my truck to tow, and it would make for a very unsafe condition to have my vehicle’s speed become limited as if the vehicle ran out of fuel. Mountain grades. Two-lane highways. Passing through bad neighborhoods. Driving in uninhabited areas, sometimes late at night. Family of 6 in the vehicle. Unacceptable. General motors corp. Must create a permanent and fail-safe fix for this emissions system and implement the parts. The emissions system warranty should be extended from 80k miles to lifetime to cover the vehicles affected.

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The contact owns a 2022 GMC Sierra 3500. The contact stated that the check engine warning light was illuminated intermittently. The contact stated while driving approximately 50-70 mph, the check engine warning light illuminated. Additionally, the contact noticed that the vehicle was experiencing reduced power and performance. The vehicle was taken to the dealer, where the nox sensor was replaced and a manual dpf regeneration was performed. The vehicle was repaired and remained at the dealer. The contact related the failure to gm campaign number: n212351211. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered. The manufacturer referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 68,000.

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The contact owns a 2016 GMC Sierra 3500. The contact stated while driving 20 mph, there was an abnormal rattling sound coming from the engine compartment. The vehicle lost motive power and stalled. The vehicle was towed to the residence. The vehicle was towed to an independent mechanic where it was diagnosed that the crankshaft, lower bearings, head gasket seals, and the long block needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 105,000.

Vehicle would crank over but not start. Diagnosed as electronic control module by dealer. Part ordered on 12/6/23, gm does not have part available as of 12/27/23, vehicle unable to be driven.

The contact owns a 2015 GMC Sierra 3500. The contact stated while driving approximately 70 mph, the vehicle abruptly lost motive power and decelerated to 25 mph. The contact stated that the message “engine power reduced” was displayed. The contact stated that the failure was intermittent, but always occurred while driving at high speeds. The contact had taken the vehicle to a local dealer however, the failure could not be duplicated. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 48,815,.

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Engine coolant low error constantly appears. Gm service provider states that engine coolant level is fine, but sensor may be defective.

I own a 2016 GMC 3500 diesel that had a serious mechanical breakdown while traveling on the freeway. The truck lost all motive power and needed to coast across 4 freeway lanes. Once towed to a local GMC dealer, they diagnosed the problem as the bosch cp4 fuel pump internally came apart while driving. I have to have this vehicle working so I got it repaired at a cost of $16,145. This is a known issue and losing all power while at highway speeds could have caused a serious incident. Please address this issue before someone dies.

Various warning lights are coming on sincve I purchased this vehicle, such as abs, engine power reduced, oil changing service, service engine light, service trailer brake system, wheel tracking, service esc, passing gear cuts out. My vehicle has been in the shop many times and is in the shop now. I have a deep concerned for the safety performance of this vehicle for myself and my family.

Plugged in engine block heater and the car erupted in flames. Total loss.

Vehicle has a cp4 fuel pump. This pump has a high failure rate. Upon failure the vehicle shuts down and cannot be restarted. This can happen at any time and anywhere. Can happen while on a highway or freeway. This vehicle is used to haul heave loads. This failure can ending up to $10,000 or more to repair. This failure has not happened on this vehicle yet. Am very concerned about me safety and the safety of others because of the high failure rate.

•the diesel exhaust fluid heater is a faulty component in the system, there is a back order on the part with no eta • my pickup only does 55mph right now and soon to do 5mph you cannot drive on a public road doing 5mph •there is thousands of other people having the same exact problem! •the def light is illuminated on my dash along with the check engine light, when you diagnose the error code it comes up with “p20c1 reductant heater c control circuit/open”.

The throttle body gets stuck wide open after the eninge gets up to operating temperature, it will give some warning with the throttle like on off throttle use and no codes show up at all. The risk of everyones is in extrem danger. The break are to soft and well not stop unless you put both feet on the break pedal down to the floor. Tranismission can not figure out what gear it needs to be in way too many gears and horrible fuel mpg for the 6. 6l duramax l5p. None of the gm dealership will look at the truck unless there is a code or it is happening right there when they look up the trucks VIN.

While towing our trailer, truck went into reduced power mode, regen message displayed; check engine light came on; loud bag occurred and hissing from under the hood. Truck slowed to 3 mph so we pulled to shoulder and turned the vehicle off. Truck had blown the hose off the the turbo. We reclamped and restarted. Displayed check engine light, reduced power & regen message to keep driving however truck wouldn’t go over a 3mph crawl. Truck lost all power, everything shut down and wouldn’t restart. No dash lights, no error, no crank, no power. We were dead on the highway in the truck lane while towing. This truck goes into reduced power mode every time it tries to regen and we have had it to the dealer multiple times however, the problem continues to get worse. When it does regen, sometimes it takes hours. Dealer says needed a manual regen & that is their solution. Yet problem persists.

The contact owns a 2011 GMC Sierra 3500. The contact stated while driving approximately 75 mph, the vehicle lost motive power and stalled. The vehicle failed to accelerate, lost braking functionality, and was difficult to steer before the failure. There were no warning lights illuminated. The vehicle was towed to the local dealer where it was diagnosed that the injection pump needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure however, no further assistance was provided. The approximately failure mileage was 106,000.

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Cp4 high pressure fuel pump failed/disintegrated causing metal shavings to be pumped through out the fuel lines, injectors and connected systems requiring a replacement of the pump, injector and fuel lines totaling over $11,000 in repairs. Trucks mileage was 94112 at the time.

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The computer lights up the dash reducing power and turning off power to trailer brakes. This has almost caused an accident on several occasions . It happens a couple of times per trips. This vehicle has been in the shop a couple of times per month since it was put into service. Glenn polk Chevrolet has worked on it each time and the problem is still there. This truck has also had several injector issues. There is an open case with this vehicle with general motors with no resolution. I have filled out forms on each of my 2020 GMC's 3500's.

Tl-the contact owns a 2018 GMC Sierra 3500. Th econtact received notification of NHTSA campaign number: 19v328000 (engine) 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. Royal moore Buick GMC, 1380 se river rd, hillsboro, or 97123, (503) 648-1153, was contacted and it was confirmed that part was not available. The manufacturer was also contacted and made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect. Ah.

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Tl the contact owns a 2007 GMC Sierra 3500. The contact noticed black smoke in his home. He then noticed that the vehicle was engulfed in flames. The fire department was not contacted because the contact was able to contain the fire. A police report was not filed. The vehicle was not towed and remained at the contact's residence. The dealer and manufacturer were not contacted. The contact suffered minor burns, which did not require medical attention. The failure mileage was approximately 260,000.

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The contact owns a 2013 GMC Sierra 3500. While the vehicle was at the dealer for inspection, the check engine warning indicator illuminated. In addition "trailer brake system" was displayed across the message board. The technician diagnosed that the trailer brake system module needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The contact was aware of NHTSA campaign number: 14v614000 (electrical system). The VIN was not included. The failure mileage was 5,000.

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The contact owns a 2002 GMC Sierra 3500. While operating the vehicle, the odor of fuel was noticeable inside the cabin. Upon inspection, the contact discovered fuel had leaked from the vehicle onto the ground. The vehicle was taken to an independent mechanic who diagnosed that the fuel injectors needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The VIN was not available. The failure mileage was 120,000.

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This started just a few weeks after I purchased the truck, still under warrenty. It has been in the shop twice for this. It has happened 3 times. While driving the truck will shut off like you turned the key off. Very dangerous when driving in traffic. Has been in shop twice for this problem, GMC has failed to find or fix the problem. I told them that I would not put my family back into a truck that has the possibility of causing a wreck and getting them hurt. Filed a claim 71-1191646541 with GMC customer service, trying to get some help. Nothing happened. The GMC service center told me that they could not find or fix the problem, and that I needed to pick up my truck. I told them that if they could not find or fix the problem, I would not put my family back into an unsafe truck that could possibly get them hurt or killed. I tried to have someone from GMC upper management contact me so we could come up with a solution. But no one from management would contact me. So I ended up having to trade this truck in for a new one, which cost me money out of my pocket, higher payments, longer terms etc. Dont think it was right that GMC would not stand behind there product. Why is it that GMC did not have to do anything about a safety item that they could not fix ? I was not asking for money or anything like that, just swap it out even for a safe truck that I could put my family in without fear of them getting hurt. But instead, GMC decided to forget about the problem, and it ended up costing me and my family money that could have been used for other things like food, bills, medical etc.

See all problems of the 2012 GMC Sierra 3500 🔎.

Feb 7, 2011, with just 11,200 miles replaced two glow plugs. Sept 6, 2013, in millersburg, ohio, with 26,632 another glow plug was replaced and was advised we should have the turbo checked when we returned home in California. March 20, 2014, with 31,986 miles, turbo was replaced. Given that our 2005 GMC truck, VIN # [xxx], blew up and burned up with only 30,000 miles, this is very alarming that our 2009 truck is having such major problems. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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