GMC Complaints

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving 75 MPH on the interstate, the upper lip of the front grill detached and flew over the windshield into oncoming traffic. The driver was unable to retrieve the part. There were no warning lights illuminated. The contact called the local dealer, who confirmed there was no recall coverage on the VIN for the failure. The dealer informed the contact that the part was on backorder. The vehicle was not diagnosed or repaired. The contact called another local dealer, Ross Downing Chrysler Dodge Jeep Ram (500 Westin Oaks Dr, Hammond, LA 70403) and was referred to the manufacturer for assistance. The manufacturer was contacted and confirmed that the VIN was not under recall and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 50,000.

This vehicle has left my family along side of a high twice. First time from lifter failure the second time from bearing failure. The bearing failure caused the vehicle to shut off and made for an unsafe pull off of a major highway. Both times this has happened with no warning till it happened. Lost of power with the check engine light coming on at the same time. No warning of any issues till it was to late a broke down. This could have been tragic to my family the second time around when complete shut down on an interstate highway why driving in heavy traffic. WITH NO WARNING boom shut off!! Every gm/chevy dealer I been too even say it’s been an issue and don’t understand why gm has not fixed the problem. These repairs alone cost us over 18000 out of pocket.

The contact owns a 2021 GMC Acadia. The contact stated that the navigation screen was inoperable. There were no warning lights illuminated. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The dealer suggested replacing the unit. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline to report the failure. The approximate failure mileage was 107,000.

Engine failure/ lifter issue with no prior warning. Driving down the road vehicle suddenly lost power and error message appeared. The vehicle was inspected by GM dealer and extended warranty company in late 2023. We no longer own this vehicle

The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed and depressing the accelerator pedal, the vehicle failed to accelerate as intended. The message "Reduced Power" was displayed, and the RPMs increased. Additionally, the vehicle jerked, and the contact noticed that there was smoke coming out of the exhaust pipe. The vehicle was driven to the contact's residence. The vehicle was taken to an independent mechanic, where it was diagnosed that the starter, the battery, the fuel pump, the oil pump, the oil pump sensors, and the fuel injectors had failed and needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The contact stated that while driving at an undisclosed speed, the vehicle stalled. There was no warning light illuminated. The vehicle was able to restart; however, the failure recurred. The vehicle was driven to the contact's residence. The vehicle was not repaired. The manufacturer was made aware of the failure, but no assistance was provided. The failure mileage was approximately 133,742.

In May 2025, my vehicle suddenly started jerking, shaking, and almost stalled out while driving. I was on a busy 3 lane roadway with 6 passengers total. As I would try to accelerate, the power was significantly decreased. I felt it jerk between shifting several times. My check engine light came on. I was so scared that someone would hit my vehicle and injure us. I brought it to a GMC dealership. They said that my transmission failed, metal in the transmission fluid. How is this possible? Upon researching this problem, this is a common issue with the 2017 GMC Yukon Denali. There are class action law suits and lemon law lawsuits against GMC regarding this problem which causes major safety concerns. My vehicle has been well maintained with lots of service records to prove it. I have babied her and I’ve never towed anything. This transmission issue needs to be addressed and recalled. I need a new transmission which will cost between $5,000-$7,000. This is just horrible and disappointing regarding the quality and reported issues that are not being recalled by GMC.

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. There was no warning light illuminated. The vehicle was driven to the shoulder of the road. The vehicle was towed to the dealer where it was diagnosed with metal shavings in the oil pan and engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact related the failure to an unknown recall. The manufacturer was made aware of the failure but no assistance was provided. The contact was advised to contact the NHTSA Hotline to report the safety failure. The failure mileage was approximately 120,000.

I got off a highway exit ramp and with no warning my brakes were hard to press. There was no warning lights on my dash. The brakes take a lot of force to push for a stop. The warning light finally came on a day later with codes p0556 and u040171.

Power Steering fails intermittently. Shows stibilitrack warning. Can sometimes be immediately fixed by turning the vehicle off/on. Sometimes it takes a while. I've had the steering fail in the middle of a turn causing an extreme amount of additional force. Problem is intermittent, and is covered under other recalls for the same model year.

We purchased a brand new 2025 GMC Yukon on 5/19 and on 5/22, the vehicle would not release the parking brake. Multiple sensors / alerts were displayed, brake assist failure, press hard to brake, speed limited, service ESC, service traction control, check engine light, brake park, service ABS brakes. Vehicle was not drivable. Towed to Marhofer GMC, problem was replicated next day. Was informed that brake booster and master cylinder were bad, however on a national back order. We are now 3 weeks out, without a repair completed or parts. Was also informed by dealer that there is a service bulletin out on this vehicle. Vehicle has 170 miles.