GMC Complaints

I was traveling at the posted speed limit of 80 mph on [XXX] in South Dakota at [XXX] and the GMC Acadia was working without any issue when all of a sudden various warnings flashed on the dashboard with one of them being power saver mode engaged. Within about 3 minutes various other warnings flashed and the vehicle motor turned off along with all of the electrical systems. Luckily, I was able to maneuver the GMC Acadia to the shoulder of the highway safely. The vehicle would not start and for about a minute or so we were trapped in the Acadia. We could not unlock the doors or wind down the windows until I pressed the start/stop bottom several times. Onstar did not work either. Once we could get out of the Acadia, my wife called 911 and in roughly 20 minutes or so, a police officer arrived at our location. We also called AAA and had a tow truck take the broken down GMC Acadia to a garage for repairs. It turns out that the alternator went bad and rendered our GMC Acadia useless in roughly 3 minutes from the initial warning. There was absolutely none of the tell tale warnings of a bad alternator. We did not see or observe any dim lights, hesitating starts or any other things associated with a bad alternator prior to the 3 minute warning before the vehicle completely was inoperable. We are very lucky to be alive. If [XXX] was more congested with traffic at the time of this incident, we might have been serious injured if not killed. IMO this GMC Acadia is a death trap. This vehicle warns the driver when the key fob’s battery is low many weeks before it needs to be replaced. It should warn you more than 3 minutes if not several hours prior to the vehicle being completely immobilized. It should be noted that the check engine light came on several hours before this incident and I called Onstar and they ran the diagnostics and returned a P0420 code which is related to emissions. The check engine light turned itself off about 1 hour before incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMAT

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.

LED Headlamps blink off and back on in a fraction of a second. Seems to be related to low beam setting. Seems to not be related to auto-dimming functionality. Seems to be a narrow build date window from late Spring 2024 thru June 2024. Occurs when vehicle is moving or parked. Can be replicated in daylight by manually turning headlights on in the control center. GM documented with Document ID 6691954 "#PIT6203: Headlamp or DRL Flicker or Flash (July 16, 2024) Possible hazards include oncoming drivers being flashed from flicker. Oncoming drivers thinking they're being signaled by the flicker. Pedestrians or cyclists thinking the flash or flicker is signaling them to proceed and that vehicle operator will yield. Possible that headlamps will stay off when they flicker, rendering the driver unable to see during night driving. Please consider escalating this issue to a formal recall due to dangers outlined above.

This vehicle has an intermittent headlight flicker that is a distraction to myself and other drivers. GM is aware of the issue but has yet to provide a resolution.

My car seats (2nd row & 3rd row) seats are rattling really bad when I am on the freeway or highway roads; signs of loose seats. Very concerning to wear it loosens the seat belt strap securing my toddlers car seat. I thought it was the road but unfortunately it’s my seats.

Incident happened August 9, 2020. Brakes suddenly stiffened and unable to stop vehicle. There were no warning signs or indicators. Thank goodness I was going at a lower speed and was able to coast into an area to stop. Ended up being the vacuum pump. This needs to be recalled ASAP. This could have been a fatal accident. I have kept the old vacuum pump as well as the pieces that were thrown from it that the mechanic had to dig out.

Stabilitrak warning light comes on intermittently. Cruise or anti-lock brakes do not work when this condition is present

HEADLIGHTS FLICKER OFF AND BACK ON AGAIN INTERMITTENTLY / OTHER DRIVERS ON THE ROAD THINK YOU'RE FLASHING THEM / KNOWN ISSUE PUBLICLY VEHICLE IN DEALERSHIP WITH NO SOLUTION FOR OVER A MONTH / NO WARNING LIGHTS OR CODES TO ACKNOWLEDGE

1. Fuel pump control mod 2. my car gave me only a second warning before it shut down entirely. I was somehow able to get to the side of the road. no car going to the car 3. It was replaced at an independent service station. They called GMC dealership for assistance on diagnosis. Dealership said this is happening 4. No warning lights at all. No car trouble at all. Car is fully up to date on maintenance This is only a 2021 car with such low mileage you expect to a car to run properly if well maintained. I called the GMC dealership and spoke to the Service manager and he just said that these things happen. Cars are complicated these days. I found that unacceptable since I could have been killed if someone was directly behind me and I could not get to safety. I spent $416 to get towed from a NJ towing company since AAA is not allowed to tow me on the Garden State parkway. . I spent $165 to get to Philadelphia to catch my flight since I did not have a car. I hope that this major shutdown of this car can be addressed and the answer is not just that cars are complicated these days. Thank you.

Headlights and DRLs flicker at night when in on position. GMC with no fix and no timeline as to when. Safety issue driving at night. First started at 49 miles on odometer. Now at 1800 miles and still ongoing.