Chevrolet, Trouble with GMC Denali 3500 Since purchase. Good afternoon, In January of this year, I finally was able to get my truck that I had been waiting for almost two years for. The truck was delivered to me on Thursday, January 25th, 2024, with 635 miles. When I drove my new truck to the for the first time, the steering wheel had a terrible shake if I drove over 45 miles an hour. On Monday, Jan 29th day we took the truck to a very trusted tire shop, they rebalanced the front tires and the truck drove just fine. However, when I was driving the truck to the tire shop, 20 miles from my house, I had four codes come up on the dashboard:
1.)Service Trailer brake system. 2.)Service ESC. 3.)Service Traction Control. 4.)Service Steering Column Lock. The following warning lights also came on the Instrument Panel: 1.)Check Engine Light
2.)Antilock Brake System. 3.)Forward Collision Alert. 4.)Traction Control (ESC). We called our salesperson Kevin Fagen right away to alert him of these codes. Since we were leaving for Florida, we could not bring the truck down for an evaluation. After we came home from Florida, I took the truck in for the first appointment on Thursday March 14th, 2024. Please see Invoice #1169965 for all the system check performed on the truck. During this visit, I was informed that I will need a new axel since the axel that was installed at the factory was “out of round”. I was told the axel would have to be ordered and they would call me when it arrives at the store in Sioux Falls. On my way home from Sioux Falls, all the codes and warning lights came on and my cruise would not work. Also, I would get notifications that there was a car in my blind spots (both sides of the truck). When I checked for a vehicle, nothing was there. I called the next day to Billion Service Center; they could not explain why the blind spot alerts kept happening. While waiting for the axel to be delivered to the Service Center, all the codes would randomly appear while driving. When these codes appear, my cruise control would not be available until you would pull over to the side of the road and turn the truck off. This might work, but they codes would eventually come back. Also, while waiting for the axle to be delivered; the truck would “slip” while driving. I could feel the rear axle have a “slip or jerk” while driving and especially pulling my horse trailer. June 11th, 2024 was the day for the axle to be replaced. I was supposed to receive a call when the axel arrived to Billion, but Austin did not call. The axel arrived at the end of April to Billions. Besides the axle being replaced, the differential and side obstacle detection control module was also replaced. On June 18th, my husband was driving the truck all the codes came back and lost the ability to use cruise control. These four codes and warning light on the instrument panel continue to appear and affect the performance of the truck. July 8th, 2024, I returned to Sioux Falls with my truck because the codes keep happening (Invoice # 1180365) and would like to have the truck evaluated again. They took it for a test drive and could not get the codes to appear. I reminded them that it is random, and you cannot make them appear. I was told the occurrence of the codes was due to bugs on my sensors. I reminded the service advisor that there are no bugs in January, February, March and April. I was also informed that I would need to bring my truck to Sioux Falls right away when the codes appear. That is good in theory, but when you live two hours away and it occurs during times when the Service Center is closed. After this appointment, the codes continue to appear and affect the performance of the truck. July 18th, 2024, I brought the truck back again since the codes keep returning. Once again it was test drove, no codes appeared. The service advisor said to come back when they appear again. While driving in Sioux Falls the Electric Parking Brake Service light appeared on the instrument panel. The Service Center was closed. I turn the truck off and the Electric Parking Brake Service light went away. The Electric Parking Brake Service light and the same four codes keep appearing. Sometimes when the truck is started, I will get a notification that the “Internet Signal Lost, Attempting to Connect”. This notification has been going for about four months. Sometimes turning the truck off/on will resolve the issue. The Traction Control icon will randomly come off/on for no reason. The roads are dry. This is one of the original warning lights that started after I received my truck. While pulling my horse trailer, I will receive notifications that there is an issue with my trailer lights and/or brakes. The trailer is working correctly, no issue was found with the trailer. I also feel the rear axle slip again. On September 11th, 2024, I was able to get the truck to a GMC Dealership while all the codes were occurring. Here are the results. I would like to know if there has been anything reported to GMC regarding 2020 and newer trucks spontaneously starting on fire after the following codes appear: Low DEF and Electric Parking Brake Service light appear. I also receive those codes. There have been several posts on Facebook alerting owners about the trucks spontaneously starting on fire. On October 14th, while driving on the interstate the truck spontaneously did a braking motion that would be similar to the front sensors alerting me that I was following too close to a vehicle in front of me. However, there were NO vehicles in front of me. During two of the occurrences, there was a vehicle behind me and the other incident was when there were no vehicles around me. This is a major concern, if the truck had significantly slowed down, I would have been rear-ended on the interstate. I now feel very unsafe while driving this truck. I would like you all to know that our salesperson, Kevin Fagen, has been very helpful to us. We appreciate all the assistance and time he has done for us. My husband and I have been very loyal Chevrolet and GMC customers. The issues that have been experiencing with my truck has caused significant inconvenience since we live 2 hours from the dealership that sold us the truck, worry and anxiety if my truck will leave me stranded alongside the road. Since I use my truck to pull my horse trailer, I purchased special tow insurance that will tow my truck and trailer if stranded along the side of the road. We believe our truck is a “lemon” since we have experienced multiple issues since we have purchased this truck. Is there any assistance regarding this ongoing issue?
