GMC Complaints

ON [XXX] my spouse was driving her new 2024 GMC Terrain in Asheville, NC. When suddenly the car stopped and when was able to maintain control and coast to a safe area. The vehicle was subsequently taken to the dealers service center GMC Asheville, NC (Harry's on the Hill). The diagnosis was determined to be a defective a transmission valve body. In discussion with the dealer service manager he indicated this is a common occurrence with the valve body. Needless to say this defect can be fatal especially during inclement weather, fast speeds, winding narrow mountains roads! As of 15 May 2024, the dealer, GMC nor the manufacturer of the valve body has not provided a replacement part for this vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2022 GMC Yukon. The contact stated while starting the vehicle, there was a clicking sound coming from the vehicle and the vehicle failed to start. The vehicle was jumpstarted. The vehicle was taken to a dealer for routine maintenance; however, the contact asked for the vehicle to be diagnosed. The dealer stated that the failure was not yet determined. The failure recurred. The vehicle was taken to an independent mechanic where it was diagnosed with starter failure. The dealer was contacted, and the contact was informed that the vehicle was no longer under Warranty. The manufacturer was made aware of the failure. The failure mileage was approximately 38,000. The VIN was not available.

The contact owns a 2019 GMC Acadia. The contact stated while driving at undisclosed speeds, the "Steering Assist - Reduce Speeds" message was displayed, and there was a loud roaring sound coming from the engine. The contact stated that the check engine warning light was illuminated. The failure recurred while the heat was turned off in the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed with a faulty temperature gauge. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000.

While driving at approximately 55 mph, the vehicle suddenly stalled and would not accelerate. I was able to pull over onto the shoulder and turn the vehicle off. The engine would not turn over and the brake pedal locked into position, rendering the vehicle immobile. The check engine light also came on at this point. The vehicle was towed and ultimately repaired at the local GMC dealership, where the fuel pump was replaced. The 2022 GMC Terrain already has a recall in place due to the fuel pump module not providing sufficient fuel to the engine, resulting in an engine stall (23V013000), the effects of which sound very similar to what occurred. However, this vehicle’s VIN was not included in the recall. We are very lucky that this failure did not result in a crash, and that no further incident occurred while we were stranded on the side of the highway during the night, waiting for a tow.

My 2021 GMC Acadia only has 25,327 miles. I purchased it new from Mossy of Picayune. The fuel pump module has been replaced 3 times. The first 2 times I was able to drive it to dealership for repairs. The last time on march 29, I was crossing a very busy highway and my vehicle just stopped without warning. It stopped as I was crossing and vehicles were coming up behind me very fast and I was almost hit. This was very scary and dangerous for me and my family and also the other vehicles on the highway . I was able to coax it into the emergency lane. I called Mossy of Picayune and was told my vehicle was no longer under warranty and they didn’t have a tow truck available. I had it towed to a local repair shop and had repaired. The cost to tow to Mossy was high (40 miles). And I paid $100.00 to have towed to local shop. The cost of repairs was $285.00. There really needs to be a recall on this dangerous situation. I have read many reviews with others having the same problem with their 2021 Acadia. I am very worried to drive my vehicle.

GM has not yet fixed the driver's side air bag problem, by replacing it per GM Safety Recall # N232404980. We purchased this vehicle from Folsom Buick GMC, 12640 Auto Mall Cir., Folsom, CA 95630. It had 7,000 miles on it when purchased in 2014. The mileage now is 180,236., & it is TEN YEARS LATER! The below dealers have completed numerous work orders on this vehicle over the last 10 years except for #4 because my wife & I recently moved to Arizona. 1. Folsom Buick GMC, Folsom, CA PH: 916-400-2884. 2. Reliable Buick GMC, 400 Automall Dr., Roseville, CA. PH: 916-783-5233. 3. Cal Worthington Chevrolet, 350 Automall Dr., Roseville. PH: 916-945-9142. 4. Henry Brown Buick GMC, 1550 E. Drivers Way, Gilbert, AZ. PH: 480-630-3917. Without exception, each one of these dealers said that they cannot fix it because General Motors has not supplied the part(s) to remedy the problem. Per news reports over a decade +/- , this brand of defective driver's air bag can, and has, caused fatal injuries to drivers involved in accidents that caused the air bag to deploy. I would appreciate it very much if the NHTSA can, and will, cause (force) General Motors to replace this defective item, or supply a replacement vehicle that will not kill the driver should he/she be involved in an accident. Thank you. Sincerely, [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The coolant control valve is faulty and needs to be replaced. GMC and the dealership know about the issue (Bulletin No. PIP5791), but are not fixing it in a timely manner. This is a safety concern as the system will automatically reduce engine power, which is a major concern when towing and/or in mountainous terrain.

Windshield wipers quit working. I turned off the rain sensing feature and they did not work even then. This is the second complaint I am filing on this vehicle. The vehicle is at the dealership for the second time to address this issue. Very very unsafe! they will work fine and then all of the sudden while it is raining they will stop working. Night time is the worst.

When I put my car in park and try to turn it off, the dash shows an error message "SHIFT TO PARK". The car will either not turn off the ignition or allow me to leave the vehicle or lock/unlock the doors. It alarms incessently--even when trying to move the shifter around. Takes several times of restarting and shifting to get it to clear so I can put it into park and exit the vehicle. Local dealer is charging me over $2000 to repair the transmission control shifter assembly; BCM low signal; in-line shifter wire harness jumper--exactly one month after my warranty expired. It's a KNOWN Acadia (and other GM vehicle) issue--per several bulletins--NA-19-206 as an example.

The contact owns a 2022 GMC Canyon. The contact stated that while driving approximately 5 MPH and making a right turn, the steering wheel became inoperable. The service power steering message was displayed. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was diagnosed that there was water intrusion into the electrical connector. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 14,424.