2019 GMC SIERRA 1500 Complaints

While driving on the freeway the power steering lost it's power. There was so much resistance from the steering wheel it became almost impossible to control the vehicle. There was a notice on the info screen " power steering needs service. I was able to get the truck to a GMC dealer where a certified mechanic had to replace the steering gear motor. The truck has been lightly used and only has 35,070 miles on the odometer.

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving 40 MPH, the vehicle was vibrating and shaking abnormally. The contact pulled over to the side of the roadway and turned off and restarted the vehicle and the shaking ceased. The contact stated that the failure became a persistent failure. The vehicle was taken to a dealer and independent mechanic to be diagnosed. The contact was informed that the vehicle had experienced transmission failure however, the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 84,000.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while his wife was driving 25 MPH, the vehicle made an abnormally loud sound and the front driver's side wheel detached. The vehicle came to a complete stop. The vehicle was towed to the dealer, where it was diagnosed that the upper control arm had disconnected from the steering wheel ball joint, and it was determined that the upper control joint, steering wheel column, and front driver's and passenger's side wheel needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had received an alignment twenty days prior to the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 70,000.

Right lifter went out & damaged the CAM Shaft which in turn damaged the engine The vehicle has been sitting at the dealership since August 1, 2024 & confirmed on August 9, 2024, stating that a new CAM shaft would need replaced or a new engine, which ever we choose. NOTE: Vehicle only has 40,298 miles on it I was driving to work on August 1, 2024, service engine light came on & was blinking & the breaking system lights came on, this was the only warning that I received.

The engine of the vehicle malfunctioned. The vehicle is available, but however it was taken to a certified dealership to be repaired. My safety and the safety of my three nieces, who were in the vehicle at the time, were put at risk as the vehicle all of a sudden staled in the middle of the Interstate while driving at 75 miles speed rate. The dealership repaired the vehicle by replacing the engine because the camshaft was scored, one of the lifters had failed, and a pushrod was bent. The only warning lamp/message was at the time of stale which read service ESC, Service parking break, and there was a third message but could not remember. I have only had the vehicle for sixteen months. The vehicle was taken in for it regularly scheduled oil changes and tire rotations. There were no issues or warnings prior to the engine replacement which cost me $8623.00.

Rear 3rd brake light and rear window are leaking water into the cab causing visibility issues.

smoke chrome trim package on the front of the vehicle is peeling and is a manufacturer defect, GM is offering no assistance in remedying this problem and is a known problem by gm with vehicles going back as far as 2017

2019 GMC Sierra 1500 SLT. Truck would not start on several occassions. By playing with brake, shift, and steering wheel truck would start again., Also would show warning notices, last one being {engine oil low-add oil}, even right after I just had the oil changed. This last time it would not start I paid to have my mechanic come to me to check it out. He tested a lot and thought it might be the starter so I then had to pay to have it flat-bedded to their garage. What he finally found was a BUNCH of wires worn through in a major wiring harness. It was caused by the wiring harness being next to the steering knuckle and the steering was wearing through the wires exposing bare wires. The mechanic and I see this as a major safety concern and a possible fire hazard. He has told me others have had similer problems . I believe this should definitly be a safety recall for these vehicles. My mechanic states that a new wiring harness olone is about $1500.00 plus a LOT of labor to install it. I do not believe that I should have to pay for a defect in GMC building this truck I have a picture of this mess of wires if you can help me with this. Don't know how to upload the photo I have but would gladly send it to you, Please respond back to this. Thank You Dennis Dorn

The contact owns a 2019 GMC Sierra 1500. The contact stated that on several occasions while driving at various speeds or while the vehicle was parked, the tailgate opened inadvertently. Additionally, the contact stated that the tailgate failed to lock or unlock manually. The vehicle was taken to a dealer where it was diagnosed and determined that unknown parts needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 83,000.

Check Engine Light came on while driving system scan states misfire cylinder 6 but resulted in the lifter being damaged as well as the cam shaft on a vehicle that has 108,000 miles. Prior to this I reported multiple times that it seemed that the transmission would slip and stuttered when on a incline and put in reverse. I was told it was a computer program issue and was charged for a software update which obviously did not fix the issue but ruined the engine.