Consumer Safety Complaints

Incident date: Mar 6, 2026

The contact owns a 2025 GMC Acadia. The contact stated that while driving 35 MPH at nighttime, there was an abnormally loud explosion and the contact became aware that the sunroof had exploded unexpectedly, causing shattered glass to fall inside the vehicle onto the contact's head, face, and body. The contact stated that two of her children were occupying the third-row seats when the failure occur... Read more

Incident date: Jun 2, 2023

The airbag system on my 2020 GMC Terrain has an intermittent malfunction. The airbag warning light turns on and off and the diagnostic code B0014 has been identified by a dealership. When the warning light is on, the airbag system may not deploy properly in a crash, creating a safety risk. The vehicle has approximately 49,000 miles. The problem has occurred for about three years. The dealership r... Read more

Incident date: Mar 9, 2026

Rear glass window shattered due to the defroster getting too hot. Some smoke was noticed

Incident date: Mar 9, 2026

The contact owns a 2018 GMC Acadia. The contact stated that while shifting into park(P), the gear shift indicator failed to display that the vehicle was in park(P) on the instrument panel, even though the vehicle was in park(P). The gear shifter was shifted continuously until the gear shift indicator recognized that the vehicle was in park(P) on the instrument panel. No warning lights were illumin... Read more

Incident date: Mar 9, 2026

The gauge cluster quit working, I have no way of knowing my speed or how much fuel is in the vehicle. Feel like this is a safety issue with not being able to see the speedometer.

Incident date: Feb 10, 2026

The engine locked up 2 months after recall inspection. There was no lights or warnings. Towed into dealer, they inspected it and said lower end failed. Dealer replaced engine.

Incident date: Feb 25, 2026

I WAS DRIVING THE CAR ON 12-22-25 I LOST POWER MY CAR DIED ON I94. BATTERY DIED THE DEARLSHIP COULDNT GET THE CODE. GOT THE CAR BACK ON 12-26-25. ENGINE LIGHT CAME ON CARRIE GMC REPLACED BATTERY . CAR BACK ON 12-29-25.. ENGINE LIGHT BACK ON 12-31-25 CAR BACK ON 1-8-26 REPLACLED CATALYTIC CONVEERTED AND OXY SENSOR. 2-20-26 DRIVING ON 1-94 LOST ENGINE POWER CAR BACK ON 2-25 FEUL PUMP AND FEUL LINE.... Read more

Incident date: Feb 25, 2026

I WAS DRIVING THE CAR ON 12-22-25 I LOST POWER MY CAR DIED ON I94. BATTERY DIED THE DEARLSHIP COULDNT GET THE CODE. GOT THE CAR BACK ON 12-26-25. ENGINE LIGHT CAME ON CARRIE GMC REPLACED BATTERY . CAR BACK ON 12-29-25.. ENGINE LIGHT BACK ON 12-31-25 CAR BACK ON 1-8-26 REPLACLED CATALYTIC CONVEERTED AND OXY SENSOR. 2-20-26 DRIVING ON 1-94 LOST ENGINE POWER CAR BACK ON 2-25 FEUL PUMP AND FEUL LINE.... Read more

Incident date: Feb 25, 2026

I WAS DRIVING THE CAR ON 12-22-25 I LOST POWER MY CAR DIED ON I94. BATTERY DIED THE DEARLSHIP COULDNT GET THE CODE. GOT THE CAR BACK ON 12-26-25. ENGINE LIGHT CAME ON CARRIE GMC REPLACED BATTERY . CAR BACK ON 12-29-25.. ENGINE LIGHT BACK ON 12-31-25 CAR BACK ON 1-8-26 REPLACLED CATALYTIC CONVEERTED AND OXY SENSOR. 2-20-26 DRIVING ON 1-94 LOST ENGINE POWER CAR BACK ON 2-25 FEUL PUMP AND FEUL LINE.... Read more

Incident date: Mar 8, 2026

Engine shut off while driving and steering wheel wouldn’t let me turn and I drove up on a curb into someone’s yard , There should be a recall on these trucks with the 6.2L in the year 2019, this is very dangerous I could of injured myself on injured someone else. This needs to be addressed!!

Crash

Incident date: Mar 10, 2026

First incident: When driving my vehicle the entire infotainment center went black for a few minutes. Second incident: infotainment center has frozen multiple times. Third: infotainment center glitches Last incident: a message came up saying to Service the Infotainment Center.

Incident date: Aug 10, 2025

My engine makes a rattling noise intermittently, misses, and surges. The transmission has shuddered and shifts hard randomly. The transmission has stayed at 2-plus rpm for well over two minutes. All this happens at random times. I have shown videos to my dealership, which did no good because they couldn't replicate it. I have had GM's so-called fix with changing the oil and software updates, which... Read more

Incident date: Aug 10, 2025

My engine makes a rattling noise intermittently, misses, and surges. The transmission has shuddered and shifts hard randomly. The transmission has stayed at 2-plus rpm for well over two minutes. All this happens at random times. I have shown videos to my dealership, which did no good because they couldn't replicate it. I have had GM's so-called fix with changing the oil and software updates, which... Read more

Incident date: Mar 9, 2026

Engine lost power, making noises that sounded like an exhaust leak. Had vehicle towed to dealership. Advised the next day the main bearing had failed and engine needed to be replaced.

Incident date: Mar 9, 2026

The engine temperature gauge was reading cold when driving for 40 minutes and the fan was running on high. Also said steering assist reduced. Brought it in and had to replace the thermostat, because of the code they received. That fixed the issue.

Incident date: Jan 26, 2026

While entering the freeway at approximately 45 MPH not towing the rear wheels locked for a second, truck went into the Limp mood, and dash said reduce speed, service transmission. Dealer pulled codes, P0700 and P0747...the order says cause document #6998510."replace spacer plate, check balls and valve." Correction: DTC P0747 set Dealer told me the put the new updated valve in but I don't see... Read more

Incident date: Jan 18, 2026

The 2018 Yukon Denali has been at the dealership for 7 weeks waiting for a valve body for the transmission. There are valve body recalls for other year GM vehicles with the same transmission, but not for the 2018 model even though it appears to be the same part number. The transmission was already replaced on this vehicle at 500 miles.

Incident date: Mar 6, 2026

The motor stoped working 6.2. Left me stranded in the middle of the road. No warning, the engine just gave up and stopped working. As well as the grill flying away and breaking my windshield, this happened last year in february while driving 75 mph.

Incident date: Mar 6, 2026

The motor stoped working 6.2. Left me stranded in the middle of the road. No warning, the engine just gave up and stopped working. As well as the grill flying away and breaking my windshield, this happened last year in february while driving 75 mph.

Incident date: Mar 7, 2026

We were driving on the highway when the service lights came on along with the check engine light started flashing. The truck sounded like it hesitated a little, but the lights turned off and it drove his normal. We exited the freeway as we were close to home came home, parked it turned it off and turned it back on to test it, and it hesitated to turn on so we took it straight to the dealership whe... Read more

Incident date: Mar 7, 2026

We were driving on the highway when the service lights came on along with the check engine light started flashing. The truck sounded like it hesitated a little, but the lights turned off and it drove his normal. We exited the freeway as we were close to home came home, parked it turned it off and turned it back on to test it, and it hesitated to turn on so we took it straight to the dealership whe... Read more

Incident date: Mar 7, 2026

We were driving on the highway when the service lights came on along with the check engine light started flashing. The truck sounded like it hesitated a little, but the lights turned off and it drove his normal. We exited the freeway as we were close to home came home, parked it turned it off and turned it back on to test it, and it hesitated to turn on so we took it straight to the dealership whe... Read more

Incident date: Apr 15, 2025

The contact owns a 2023 GMC Sierra 2500. The contact stated that on several occasions, after the vehicle had been parked for approximately two days, the vehicle failed to start. The vehicle was jump-started and taken to a dealer three times, where it was diagnosed and determined that the battery needed to be replaced. The vehicle was repaired three times, but the failure persisted. The manufacture... Read more

Incident date: Mar 5, 2026

I was driving down the road and my vehicle went into limp mode, and I had reduced acceleration. I got to my destination then could not reverse the vehicle out of the parking space, reverse would not engage and allow me to have acceleration power. Because the parking space was on an incline we could roll backwards then drive forward, in limp mode, to a nearby mechanic. The vehicle diagnostic codes ... Read more

Incident date: Feb 3, 2026

This complaint involves a sudden failure of my vehicle’s Anti-Lock Braking System (ABS) and Forward Collision Warning system, both of which are critical safety systems. While driving my [XXX] son to school, multiple warning lights suddenly appeared on the dashboard without any prior indication of a problem. The vehicle displayed a warning message instructing me not to exceed 36 miles per hour,... Read more

Incident date: Feb 3, 2026

This complaint involves a sudden failure of my vehicle’s Anti-Lock Braking System (ABS) and Forward Collision Warning system, both of which are critical safety systems. While driving my [XXX] son to school, multiple warning lights suddenly appeared on the dashboard without any prior indication of a problem. The vehicle displayed a warning message instructing me not to exceed 36 miles per hour,... Read more

Incident date: Feb 3, 2026

This complaint involves a sudden failure of my vehicle’s Anti-Lock Braking System (ABS) and Forward Collision Warning system, both of which are critical safety systems. While driving my [XXX] son to school, multiple warning lights suddenly appeared on the dashboard without any prior indication of a problem. The vehicle displayed a warning message instructing me not to exceed 36 miles per hour,... Read more

Incident date: Oct 27, 2025

Following the remedy of the engine recall in 2025, the truck started having intermittent electrical issues (i.e. warning lights on dash turn on/off: service 4WD, Loss traction Control, etc) come one while the truck is being driven. If the truck is turned off while the dash warning lights are on, it will NOT Start for about 24 hours. If the warning lights are ignored, eventually they will go off o... Read more

Incident date: Oct 27, 2025

Following the remedy of the engine recall in 2025, the truck started having intermittent electrical issues (i.e. warning lights on dash turn on/off: service 4WD, Loss traction Control, etc) come one while the truck is being driven. If the truck is turned off while the dash warning lights are on, it will NOT Start for about 24 hours. If the warning lights are ignored, eventually they will go off o... Read more

Incident date: Mar 31, 2025

[XXX] and [XXX] of 2025 the 6.2 V8 engine died while driving down the highway in Houston. The truck was bought brand new in January of 2025 with 100 miles on the odometer. The first engine failure happened [XXX] with 10,350 miles. Replaced, the second failure happened [XXX] with just under 25,278k miles. Once again the engine was replaced and took almost 6 weeks. INFORMATION REDACTED PURSUANT TO T... Read more

Incident date: Mar 31, 2025

[XXX] and [XXX] of 2025 the 6.2 V8 engine died while driving down the highway in Houston. The truck was bought brand new in January of 2025 with 100 miles on the odometer. The first engine failure happened [XXX] with 10,350 miles. Replaced, the second failure happened [XXX] with just under 25,278k miles. Once again the engine was replaced and took almost 6 weeks. INFORMATION REDACTED PURSUANT TO T... Read more

Incident date: Feb 28, 2026

driving 70mph on highway when engine suddenly failed. engine turned off and kicked into neutral. had to pull over on busy highway in a powerless car and have car towed. it is now getting a full engine replacement at 42k miles.

Incident date: Mar 1, 2018

Transmission shudder that is causing Drivability issues. Multiple mechanics have told me to drive it and maintain it until the transmission gives out.

Incident date: Feb 18, 2026

While driving down a highway doing between 45 and 55 mph the transmission suddenly and completely faulted causing the truck to come to a complete stop. Just enough power to get to the shoulder luckily. The transmission had basically completely blown out, fluid everywhere. The insurance company did not find any comprehensive damage. The entire transmission needs to be replaced. There were no indica... Read more

Incident date: Mar 2, 2026

The 2019 GMC Sierra AT4 with the 6.2L V8 engine began making a rattling or tapping noise at 45 mph. No warning lights appeared on the dashboard. When starting the engine and idling, a similar noise can be heard from the engine. I bought the vehicle used from a dealership one month ago, with 80,000 miles, and the second issue is the complete failure of the blind spot warning system on both mirrors.... Read more

Incident date: Mar 2, 2026

The 2019 GMC Sierra AT4 with the 6.2L V8 engine began making a rattling or tapping noise at 45 mph. No warning lights appeared on the dashboard. When starting the engine and idling, a similar noise can be heard from the engine. I bought the vehicle used from a dealership one month ago, with 80,000 miles, and the second issue is the complete failure of the blind spot warning system on both mirrors.... Read more

Incident date: Feb 11, 2026

Sudden loss of propulsion at highway speed in lane of travel. Multiple vehicles almost ran into my vehicle as this was happening and alap afterwards, because I couldn’t get it out of the lane of travel all the way. It was towed to the dealer and determined to have a seized engine. There were zero lights or sounds preceding the loss of power. Safety recall N252494003 was performed at dealer in Se... Read more

Incident date: Mar 8, 2026

Took it to dealer for engine sound said nothing was wrong 4 days later rod bearing went out while driving. Truck no longer able to drive

Incident date: Feb 26, 2026

While driving several times smelt gas and car cut out engine came on and car stopped mid driving multiple times. Says they replaced fuel pump reset car etc

Incident date: Feb 26, 2026

While driving several times smelt gas and car cut out engine came on and car stopped mid driving multiple times. Says they replaced fuel pump reset car etc

Incident date: Feb 26, 2026

While driving several times smelt gas and car cut out engine came on and car stopped mid driving multiple times. Says they replaced fuel pump reset car etc

Incident date: Feb 23, 2026

The contact owns a 2017 GMC Sierra Denali. The contact stated that while driving on the highway at an undisclosed speed, the vehicle jerked, failed to accelerate, and stalled. The vehicle was unable to shift into third gear. The check engine warning light was illuminated. The vehicle was drivable and was taken to the dealer. The vehicle was diagnosed with a wiring harness failure on the transmissi... Read more

Incident date: Feb 27, 2026

While driving, my vehicle experienced a sudden and complete engine failure without any prior warning. There were no warning lights, dashboard alerts, or performance issues that would have indicated an impending mechanical problem. The failure occurred unexpectedly while I was actively driving on a public roadway. After the incident, the vehicle was inspected and diagnosed by a licensed mechanic. ... Read more

Incident date: Feb 20, 2026

Tailgate opens randomly on numerous occasions. Sometimes it won't open after pressing the button.

Incident date: Aug 6, 2025

Vehicle was on highway when alerts started going off and a weird noise started. It scared the occupants as they were going 70mph on the highway when it happened. Luckily they were able to maneuver off the road in time and parked at a convenient store. Towed vehicle to dealership and metal was in the oil as a part failed in the engine. New engine was ordered by the dealership and installed. Th... Read more

Incident date: Mar 4, 2026

My vehicle’s steering became dangerously stiff while driving on the highway, nearly causing my wife to be involved in a serious accident. While she was traveling on I-95 in Miami, Florida, the steering suddenly got so hard that she could barely control the vehicle and was unable to turn the wheel properly. This created an extremely dangerous situation and put her life, as well as the lives of ot... Read more

Incident date: Mar 8, 2026

Coolant leak caused by known manufacture defect in upper hose assembly causes coolant to drain and engine to overheat. CEL only comes on when coolant is almost gone. GMC refuses to cover the known issue after 36k miles.

Incident date: Mar 1, 2026

The engine started a soft, cyclic tapping sound intermittently on 2/28/26 while I was out of town on a trip. No alerts showed on the GM systems app. On 3/1, while driving home from the trip, the car started hard braking at cruising speed and the engine died and would not restart. I had the car towed to the closest GM dealership and have been told the engine locked up. I just rolled 6000 miles and ... Read more

Incident date: Feb 2, 2026

Driver side mirror starts moving on its own without any physical buttons being pressed. Accident notification system has failed and has produced a CEL

Incident date: Mar 6, 2026

The contact owns a 2019 GMC Yukon XL. The contact stated that while driving approximately 50 - 55 MPH, and slowing down to approximately 40 MPH, the check engine warning light illuminated, and the engine started knocking. The contact noticed that the engine was one quart of oil low after an oil change and driving less than 2,058 miles. The vehicle was not taken to the dealer, but was not repaired.... Read more