GMC Complaints

After the vehicle was serviced with a fuel injection cleaning and an oil change (by a GM dealership), the vehicle lost about 5 miles per gallon while driving and has not improved since. . I brought the vehicle back to the same dealership and complained. Another fuel injection cleaning was performed, but it did not help. It has been about 3 months and nothing has improved. I use 93 octane, TopTier gasoline.

The vehicle stalls when air start kicks on so when stopped auto stop kick on and when your ready to go the go stalls to turn back on. I have also lost power to the car randomly. Power train issue on car keeps coming on with engine light. I have taken to dealer when car was under warranty and they were very dismissive to my issue. They changed some sensor under warranty And they said the issue was fixed. But the issue remains and it’s causing several issues to the car with Also a fueling code to the engine light

My vehicle started rough with rattling and knocking one morning. I contacted my dealer and made an appointment. I received an appointment for about a week out and did not operate the vehicle until that day. Upon bringing the vehicle to the GMC maintenance shop, the vehicle’s engine ceased and had to be towed the remainder of the trip.

While driving in traffic at 65mph, the engine stopped running, car went into neutral and there was no power for brakes or steering. I luckily made it to the side of the road. Vehicle was towed to my dealer ( Cardinal Buick GMC, Belleville, IL), where after 3 days they informed me that the engine was ruined, 2 main bearings were damaged and 4 of the 8 connecting rods were damaged. GM made the decision to replace the motor, but no time frame was given, I was told 2 to 3 months. The dealership did give a loaner car. My Yukon Denali was 1 year and 4 days old with 15, 882 miles on it.

On January 23, 2025, at approximately 7:00 p.m., I was traveling on I-10 when, without warning, my engine shut off on my 2022 GMC Yukon, and I rapidly lost speed. We managed to pull the vehicle off the road. This was extremely frightening since there was traffic on I-10.

While driving 40-45 mph the engine light came on and 50% loss of power was displayed on screen. Thankfully I wasn’t far from home and was in limp mode for the last 2 miles. The mileage of vehicle is 42,000 miles. The codes are reading low fuel pressure and faulty fuel pump. Any help would be appreciated as this shouldn’t be happening to this new of a vehicle.

Engine locked up, local gmc dealer diagnosis " engine is locked up - metal debris in oil - failed internal components". Engine made a few noises the week before, no other warning signs. Vehicle died in the turning lane of a two lane road. One hour not moving in busy traffic until tow truck arrived

What component or system failed or malfunctioned, and is it available for inspection upon request? Rubbing noise when turning the steering wheel. Truck has 8800 miles on it. How was your safety or the safety of others put at risk? Wasn’t able to fix on day diagnosed need to order parts. Only vehicle I have. When asked if I can continue to drive I was told if a problem arises to stop?!? Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. They confirm there is a steering gear issue. Parts in order. Was told it’s a big deal and will need it for several days to fix. 8800 miles on truck! Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others?no Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No warning lamps. Noticed it when turning into my garage at lower speeds.

My truck was part of a GM buyback program where GM Corporation bought the truck back to fix it around Aug 7th 2023 for engine problems. I am reporting this because I do not believe that GM ever reported this to NTSHA. There are also other issues happening at the same time period that should be looked into that may or may not be coincidences. At or before 10,126 miles the truck started having engine lifter and other engine issues. General Motors will not tell me exactly what was done other than lifters according to paperwork supplied. It may have had other issues like a spun bearing but it was never disclosed. Can NTSHA please look into this and information is found, could I please get the records. I asked for the paperwork of what was done while GM owned and troubleshot all the problems. I was told that information is only available to the original owner and I could not have it. It is very frustrating when General Motors Corporate use owner’s personal data as a way to hide what was done and not have to disclose required information. I am asking for service records while General Motors owned it and the service records they did to fix it. I know that there are many more engine problems that are not documented on the vehicle summary. GM will not buy back the truck over a few lifter issues. The truck was later fixed and Art Gamblin Motorsv in Enumclaw Wa, purchased it. I am told it is fixed but have no real paperwork proving this, I was able to purchase an extended warranty just in case. There is also quite a few of battery and electronic issues that do not seem normal with the car as well. The battery was replaced at 10,126 miles at the same time as the engine issues and the battery module was replaced at 29,536 miles. At 29,875 miles and 29,965 some type of communications module and On Star module was replaced. This is the around the same time as the truck was having engine issues and was eventually bought back for what is called “engine noise”.

The brake system failed in a parking lot three times within a month. It’s related to the special policy and recall regarding the vacuum and the loss of brakes at slower speeds and in reverse. The first two accidents were very minor creating no damage. The third one was at 10mph when I lost my brakes and crashed into a concrete barrier in a parking structure causing significant damage to my truck. I did not get injured but I have a wife and two kids that I am so grateful were not in the truck for the third one with major damage. With that being said my son was in the truck the second time it happened when I crashed into a parked vehicle in a parking lot because I was unable to stop which made me very frustrated and worried for my families safety in my truck. The first accident was in a parking lot where I was backing up and lost the brakes and crashed into a building which is my veterinary office causing damage to the building. Therefore after the first crash due to this issue I have decided that driving with my family in the truck is not an option anymore. It is very disappointing that a truck I purchased for the functionality and safety of having my wife and kids in it is no longer safe for passengers or myself in it. This problem is very reproducible and is a major concern for my family and my safety. It was towed to a GMC dealership in Waukesha and is being inspected and they have stated it is reproducible. No warning lamps or messages were indicated for this issue. The truck will next need to get towed to Crash Champions auto body repair to ultimately get repaired which will take another month. All of this is a major inconvenience as I am a full time firefighter and in paramedic school as well. Not having a reliable safe vehicle for an extended period of time has caused great stress and inconvenience to my family. I’m hoping and praying that something can be done about this quickly and promptly to make this right. Thank you.