GMC Complaints

I was traveling on the highway when my 2023 Yukon Denali engine shut off and switched to the neutral gear with any warnings. The dashboard display read "press start again" as I coasted to the shoulder of the highway. I was able to put the vehicle in "park" and re-start the engine after a couple of tries. I got a couple miles down the road, got off on an exit ramp then it shut off again and I again coasted to the shoulder of the highway. Again the display read "press start again", but this time the vehicle would NOT restart at all. I had full electrical power in the vehicle during both engine failures. I had the vehicle towed to my local GMC dealership. The dealership told me that I needed a new engine after assessing the vehicle.

[XXX], I PURCHASED A 2021 GMC SIERRA 1500 FROM FAULKNER CHEVROLET IN BETHLEHEM, PA. I TEST DROVE THE VEHICLE BEFORE PURCHASE AND IT SHOWED NO INDICATION OF ANY MECHANICAL ISSUES THAT I WAS ABLE TO DETECT. I WAS SHOWN BY THE DEALERSHIP THE CARFAX AND WAS INFORMED THAT THERE ARE CURRENTLY NO RECALLS FOR THE VEHICLE. I WAS LED TO BELIEVE THAT THE VEHICLE WAS IN GOOD CONDITION AND SAFE TO DRIVE AND, THEREFORE, AGREED TO PURCHASE THE VEHICLE FOR THE AFOREMENTIONED PRICE (INCLUDING TAX AND TITLE FEES). I PURCHASED THE VEHICLE WITH 60,077 MILES ON IT, AND AFTER DRIVING IT NORMALLY FOR ONLY 5 DAYS (ON [XXX]) IT BROKE DOWN AND I WAS STRANDED ON THE HIGHWAY 16 HOURS FROM HOME. I WAS ABLE TO GET THE VEHICLE TOWED AND PAID $1,200 FOR THE STARTER TO BE REPLACED, WHICH IS WHAT THE MECHANIC SUGGESTED BUT THIS ENDED UP BEING ENTIRELY UNNECESSARY AS THE REAL ISSUE WAS DUE TO A CATASTROPHIC DEFECT IN THE ENGINE. AFTER THE STARTER WAS REPLACED, I WAS DRIVING THE VEHICLE ONLY A FEW DAYS LATER (ON [XXX]) AND IT SUFFERED A CATASTROPHIC ENGINE FAILURE WHILE DRIVING 70MPH ON THE HIGHWAY. I LOST CONTROL OF THE VEHICLE AND NEARLY GOT IN A COLLISION WITH ANOTHER VEHICLE. I WAS ABLE TO GET THE VEHICLE TO THE NEAREST AUTO SHOP AND AFTER INSPECTING THE VEHICLE THEY INFORMED ME THAT THERE IS A SERIOUS ENGINE ISSUE RELATING TO A SEIZED BEARING AND THE ENGINE WILL NEED TO BE REBUILT ENTIRELY. AT THIS POINT IT HAD BEEN ONLY 12 DAYS SINCE THE PURCHASE AND THE ODEMETER READ 61,662 (1,585 MILES DRIVEN SINCE PURCHASE). DUE TO THE FAULTY VEHICLE, I WAS FORCED TO PAY TO HAVE THE VEHICLE SHIPPED FROM THE LOCATION WHERE IT BROKE DOWN TO THE DEALERSHIP WHERE I ORIGINALLY BOUGHT IT (AROUND $1,200). FAULKNER CHEVROLET KNOWINGLY SOLD ME AN UNSAFE VEHICLE THAT THEY WERE WELL AWARE HAD A DEFECTIVE 6.2L V8 ENGINE. THIS DEFECT IS CURRENTLY UNDER INVESTIGATION BY THE NHTSA AND FAULKNER CHEVROLET PURPOSEFULLY OMMITTED THIS CRUCIAL INFORMATION UNTIL AFTER THE VEHICLE WAS SOLD. CLEARLY, THIS IS AN UNETHICAL BUS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORM

I was driving 50mph when my check engine light started flashing. The engine had very little power and there was a new consistent engine knock. I took to GMC dealership and they informed me that half of the engine lifters failed and a pushrod was bent. There was no warning prior to the incident. I have had the vehicle serviced only at the dealership and have only used premium fuel. The truck has 88,000 miles.

Vehicle stalled while stopped in middle lane during rush hour traffic. Vehicle would not start, and could not be put in neutral to be pushed to side of road. Vehicle was towed to repair shop where they needed to replace the fuel pump control module. The automotive repairmen stated they have seen this with multiple GMC vehicles and they do not understand how it has not been recalled yet because, as they stated, it is going to get someone killed one day.

The passenger side lifters in my truck failed while at idle/5mph speed causing catastrophic engine failure. 2019 6.2L V8 from GM. From my own independent research, and the research/survey of others online, this appears to be a very common problem as a result of known defective parts that were installed on GM engines.

The contact owns a 2013 GMC Yukon XL. The contact stated while driving at an undisclosed speed, there was an abnormal sound coming from the engine compartment. No warning light was illuminated; however, the "Service Engine" message was displayed on the instrument panel. The vehicle was taken to a dealer where it was diagnosed that the lifters needed to be replaced. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer where it was diagnosed that the lifters needed to be replaced once again. The vehicle was repaired however, the failure persisted. The vehicle was taken to a dealer again to be diagnosed; however, the cause of the failure was not determined. The manufacturer was notified of the failure. The failure mileage was approximately 150,000.

The car all of a sudden started making wired noises during idling. While driving it would click and start shaking. Took it to a GM service center. They diagnosed as a flywheel. After investigating, it was not the fly wheel. They tore the motor apart as they though liftor 7 and 8 were bad. During that process, they found "large parts" of metal in the oil and found a rod barring failed. They are now replacing the entire engine.

I own a 2023 GMC Sierra 1500 Denali Ultimate. The truck had about 19k miles on it when the engine seized while driving on the highway late at night in January. This was extremely dangerous as I was going 55mph over a bridge and lost the engine. I was stranded on an exit ramp unable to move. It was cold that week so it was 5 degrees. Onstar informed me that since the truck could not be shifted into Neutral that it would need dollies and a flat bed. They said they could get to me at 8am which was 9 hours from when the truck broke down. It was 5 degrees out and I had no heat sitting on the highway. I ended up calling a local tow company and they were able to get to me but I had to wait 3 hours. The truck was towed to the deal and they confirmed that the engine seized (it is a known problem) and it needs a new motor. They said there is a big back log of engines because many have this issue. I still have not provided a timeline for the truck to be repaired.

Main Value body goes out when it wants to in the Transmission . no replacement parts available . Been 6 week , When this value goes out while go down the highway there is no pull to the wheels

My truck wonders down the highway. It has been to the dealership well over 4 times. They have aligned the truck multiple times, changed the steering gear box, changed the power steering pump, changed tires and nothing fixes it. It takes constant adjusting of the steering to stay in my lane on any road. Quite pitiful for a $90,000 truck. It is currently at the dealership for the THIRD time in the past 7 days because they can’t get the truck to stop leaking fluids since changing the power steering pump. Excessive play in the steering and has been like that since day one that I left the lot. My wife can’t even drive the truck because she feels unsafe with how much play is in the steering. The dealership won’t do anything about it and is offering $20,000 less than I gave for the truck now that I can’t tolerate it anymore. But I refuse to lose that much money with only 13,000 miles on it. I just want a safe and reliable truck for my business and my family. Unfortunately that is not what GM has provided me with.