Consumer Safety Complaints

Incident date: Mar 22, 2026

Out of nowhere and driving this morning, my engine reduced power came on. Then I started losing power in the car then it died on me once out of nowhere. I managed to make it home an hour and a half later, but that could’ve got me killed stopped by AutoZone since dealerships closed today and it tells me that it’s code P228C, P0089 fuel pump. And then last night my emergency service calling came... Read more

Incident date: Mar 22, 2026

Out of nowhere and driving this morning, my engine reduced power came on. Then I started losing power in the car then it died on me once out of nowhere. I managed to make it home an hour and a half later, but that could’ve got me killed stopped by AutoZone since dealerships closed today and it tells me that it’s code P228C, P0089 fuel pump. And then last night my emergency service calling came... Read more

Incident date: Mar 22, 2026

Out of nowhere and driving this morning, my engine reduced power came on. Then I started losing power in the car then it died on me once out of nowhere. I managed to make it home an hour and a half later, but that could’ve got me killed stopped by AutoZone since dealerships closed today and it tells me that it’s code P228C, P0089 fuel pump. And then last night my emergency service calling came... Read more

Incident date: Mar 20, 2026

With no warning signs, vehicle abruptly stalled while driving. I attempted to restart multiple times. Finally restarted and drove another 100ft and stalled again now with a check engine light. Made it to local shop and code P129F was found for fuel pump module. I see there is a recall on this but not for my particular vin. Recommend expanding recalls.

Incident date: Mar 16, 2026

Driving on the highway when the steering warning light came on and then I had a loss of complete steering on the highway. Somehow was able to get off the highway but not completely off the road. Back end of the vehicle was still in harms way I could not turn that wheel at all this is a complete safety issue and could have easily caused an accident and could have been deadly. There was no warnin... Read more

Incident date: Mar 9, 2026

The failure involved the engine (6.2L L87 V8), specifically suspected internal components such as the crankshaft and/or connecting rods, as identified in a current recall. The vehicle is currently located at Dennis GM in Corner Brook, Newfoundland and is available for inspection. On March 9, while driving the vehicle normally on a main highway, the engine suddenly lost all power without warning. ... Read more

Incident date: Mar 9, 2026

The failure involved the engine (6.2L L87 V8), specifically suspected internal components such as the crankshaft and/or connecting rods, as identified in a current recall. The vehicle is currently located at Dennis GM in Corner Brook, Newfoundland and is available for inspection. On March 9, while driving the vehicle normally on a main highway, the engine suddenly lost all power without warning. ... Read more

Incident date: Feb 7, 2026

The vehicle experiences a transmission/drivetrain defect involving delayed gear engagement, hesitation, and apparent slipping. When accelerating from a complete stop (especially onto an incline) the engine RPM increases but the vehicle fails to accelerate as expected. The vehicle jerks and shakes violently and is unable to gain speed. This issue is intermittent but highly repeatable and occurs al... Read more

Incident date: Feb 7, 2026

The vehicle experiences a transmission/drivetrain defect involving delayed gear engagement, hesitation, and apparent slipping. When accelerating from a complete stop (especially onto an incline) the engine RPM increases but the vehicle fails to accelerate as expected. The vehicle jerks and shakes violently and is unable to gain speed. This issue is intermittent but highly repeatable and occurs al... Read more

Incident date: Feb 7, 2026

The vehicle experiences a transmission/drivetrain defect involving delayed gear engagement, hesitation, and apparent slipping. When accelerating from a complete stop (especially onto an incline) the engine RPM increases but the vehicle fails to accelerate as expected. The vehicle jerks and shakes violently and is unable to gain speed. This issue is intermittent but highly repeatable and occurs al... Read more

Incident date: Mar 7, 2026

Engine failed, no check engine lights turned on. Needed to have the truck towed to a dealer

Incident date: Mar 15, 2026

To the best of my knowledge… My 2020 GMC Sierra Denali with a 6.2L engine and 74,000 miles had a complete engine replacement. One lifter on bank 2 was stuck, and the push rod in the cylinder was bent. The engine made a popping noise when starting. I took it to a GM dealership, where they quoted $9,200 to repair the issue or $9,600 for a brand-new engine with a 3-year/100,000-mile warranty. I k... Read more

Incident date: Mar 7, 2026

Automatic brake engaged unnecessarily/ unexpectedly while driving forward at a low speed. There was no reason for the brake to engage. There were no objects or people infont of us. This has happened twice in less than a month. Both times we were in a forward motion. It could have been a serious situation if the car behind us had been any closer when we suddenly breaked for no reason.

Incident date: Nov 29, 2022

In November 2022, I started getting a dashboard "shift to park" on my 2019 Acadia after I had parked and shut the vehicle off. At the time I took it into service to have it looked at/repaired, they told me there would probably be a recall on this issue,as it seemed to be a frequent problem, and I would get a refund for the repair. That recall never happened, and now my car is once again displaying... Read more

Incident date: Nov 29, 2022

In November 2022, I started getting a dashboard "shift to park" on my 2019 Acadia after I had parked and shut the vehicle off. At the time I took it into service to have it looked at/repaired, they told me there would probably be a recall on this issue,as it seemed to be a frequent problem, and I would get a refund for the repair. That recall never happened, and now my car is once again displaying... Read more

Incident date: Oct 10, 2024

Lifters broke and destroyed the camshaft at 99,000 miles. Total repair cost $8,200.

Incident date: Nov 5, 2025

The engine (6.2L L87 V8) failed at approximately 85,000 miles. The failure was diagnosed as internal engine damage and the engine assembly was replaced. The failed engine is available to the manufacturer through the dealer as part of the repair process. The failure resulted in a complete loss of propulsion at highway speeds on the interstate, requiring immediate deceleration and maneuvering to a ... Read more

Incident date: Mar 1, 2026

Wipers stopped working an it’s not showing an active recall but research shows this model does have wiper blade motor recalls

Incident date: Mar 15, 2026

While driving at approximately 60 mph on an open road with no obstacles present and no braking input, the rear wheels spontaneously locked up without warning. No brake pedal input. No warning light prior to the event. No obstruction in the road. The vehicle has been subject to an active manufacturer recall for rear wheel lockup due to transmission control valve failure. The dealer's own diagnostic... Read more

Incident date: Mar 15, 2026

While driving at approximately 60 mph on an open road with no obstacles present and no braking input, the rear wheels spontaneously locked up without warning. No brake pedal input. No warning light prior to the event. No obstruction in the road. The vehicle has been subject to an active manufacturer recall for rear wheel lockup due to transmission control valve failure. The dealer's own diagnostic... Read more

Incident date: Mar 15, 2026

While driving at approximately 60 mph on an open road with no obstacles present and no braking input, the rear wheels spontaneously locked up without warning. No brake pedal input. No warning light prior to the event. No obstruction in the road. The vehicle has been subject to an active manufacturer recall for rear wheel lockup due to transmission control valve failure. The dealer's own diagnostic... Read more

Incident date: Mar 21, 2026

While driving my vehicle the vehicle early in the morning going to work, the headlights went out. I pulled over, and turned it to auto and they worked there, but did not work when switching it to headlamps. That happened just the one time. Also, since I have owned the vehicle, after operating the vehicle when it is dark outside, and then getting out to get gas, and getting back in. I crank the ve... Read more

Incident date: Mar 21, 2026

While driving my vehicle the vehicle early in the morning going to work, the headlights went out. I pulled over, and turned it to auto and they worked there, but did not work when switching it to headlamps. That happened just the one time. Also, since I have owned the vehicle, after operating the vehicle when it is dark outside, and then getting out to get gas, and getting back in. I crank the ve... Read more

Incident date: Mar 12, 2026

My truck has been exhibiting hard downshifting at certain speeds, when the powertrain loads up such as a grade change, and requires a downshift. I have complained about this issue to the dealership as early as 2022, and 33,185 miles. The dealership made me pay for a transmission $388.90 flush which did not resolve the issue. The problem has become progressively worse, to the point where the tol... Read more

Incident date: Aug 23, 2025

The grill deflector flew off the truck doing 80mph on hwy130 in Austin, Texas.

Incident date: Mar 12, 2026

Vehicle battery dies and dealer cannot source issue. Voltmeter shows large fluctuations in voltage while vehicle is running and driving.

Incident date: Jul 22, 2025

My Truck Was 123369 Milles Was Driving And Stop At My Work Turn Off The Vehicle and After That Re-Start The Vehicle And The Vehicle Not Start The Check Engine Light Coming on Im Tow The Tuck To The Dealer Were I Do All My Service They Check The Truck After A Mont And They Told Me The Engine Timing Off Due To Camshaft Gear Spun On Camshaf Which Sheared Locator Pin Valve Timing Off So That Enging Do... Read more

Incident date: Mar 14, 2026

The contact owns a 2021 GMC Yukon. The contact stated that while driving at various speeds, the vehicle shuddered abnormally with blue smoke coming from the exhaust, with the message "Lane Departure Assist" displayed. The check engine and stabili-trak warning lights were illuminated. The vehicle was taken to a local service center, where it was diagnosed with cylinder #1 misfire. The local dealer ... Read more

Incident date: Mar 14, 2026

The contact owns a 2021 GMC Yukon. The contact stated that while driving at various speeds, the vehicle shuddered abnormally with blue smoke coming from the exhaust, with the message "Lane Departure Assist" displayed. The check engine and stabili-trak warning lights were illuminated. The vehicle was taken to a local service center, where it was diagnosed with cylinder #1 misfire. The local dealer ... Read more

Incident date: Mar 12, 2026

The contact owns a 2021 GMC Acadia. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. In addition, the coolant fan was running after the engine was turned off. The vehicle was taken to Auto Zone to be diagnosed due to the check engine warning light being illuminated. The contact was informed that DTC: P1098; was retrieved, which indicated a ... Read more

Incident date: Jan 24, 2026

The DEF tank in my truck is defective and its the second time in the last 14 months it has broke. The part is now back ordered and according to the dealership this is a nationwide issue regarding these specific trucks. I have contacted around 10 dealers in my area and all tell me the same thing that they have multiple trucks waiting on the same issue. I have not had my truck for over 2 months and ... Read more

Incident date: Jan 24, 2026

The DEF tank in my truck is defective and its the second time in the last 14 months it has broke. The part is now back ordered and according to the dealership this is a nationwide issue regarding these specific trucks. I have contacted around 10 dealers in my area and all tell me the same thing that they have multiple trucks waiting on the same issue. I have not had my truck for over 2 months and ... Read more

Incident date: Mar 20, 2026

Steering assist is reduced

Incident date: Feb 19, 2026

Truck broke down with a rear-wheel lockup and had the transmission replaced in June 2025. In December 2025 and February 2026, truck lost power two times and entered limp mode while on a major highway and major interstate. The problem was misdiagnosed in June 2025, diagnosed properly in December 2025, but not properly repaired, and diagnosed properly in February 2026. All three times the vehicle ha... Read more

Incident date: Feb 19, 2026

Truck broke down with a rear-wheel lockup and had the transmission replaced in June 2025. In December 2025 and February 2026, truck lost power two times and entered limp mode while on a major highway and major interstate. The problem was misdiagnosed in June 2025, diagnosed properly in December 2025, but not properly repaired, and diagnosed properly in February 2026. All three times the vehicle ha... Read more

Incident date: Mar 2, 2026

Transfercase was casuing the Yukon to serge when in auto mode. No codes warning lights were presented. The dealer did not find any codes but when the transfer case was removed the oil was drained to which metal shavings were found in the oil. After getting the Yukon back the transmission began to exibit the same type of issues. Currently the Yukon is back in the shop.

Incident date: Dec 26, 2025

High pressure fuel pump housing failed and filled the cabin with fumes. Rendered the the Yukon unsafe to drive with fuel flooding the engine compartment. Took the dealer 57 days to repair the car. No warning lights, only indication was the fumes in the cabin.

Incident date: Dec 26, 2025

High pressure fuel pump housing failed and filled the cabin with fumes. Rendered the the Yukon unsafe to drive with fuel flooding the engine compartment. Took the dealer 57 days to repair the car. No warning lights, only indication was the fumes in the cabin.

Incident date: Mar 17, 2026

While driving 65mph in my 2024 GMC Sierra Denali Ultimate on Interstate 270 in Hilliard, Ohio my chrome grill deflector just flew off and hit my windshield. It then went over my truck and almost caused a major accident with the cars and semi-trucks behind me. I was lucky to maintain control of my own vehicle! It appears to me that the mounting fractured and it looks like manufacturing defect. Loo... Read more

Incident date: Mar 17, 2026

While driving 65mph in my 2024 GMC Sierra Denali Ultimate on Interstate 270 in Hilliard, Ohio my chrome grill deflector just flew off and hit my windshield. It then went over my truck and almost caused a major accident with the cars and semi-trucks behind me. I was lucky to maintain control of my own vehicle! It appears to me that the mounting fractured and it looks like manufacturing defect. Loo... Read more

Incident date: Mar 17, 2026

When my android auto does not connect, it essentially disables the whole infotainment system which is incredibly distracting and dangerous while driving. I am requesting that this be fixed so that I can still use some of the infotainment system but they are redusing to to do anything to fix the issue. The dealer has advised that they are unable to fix the issue because it is software related but y... Read more

Incident date: Mar 17, 2026

I was driving a dirt road in snow went to make a right turn onto road at a downhill angle and the airbags deployed on the side curtains all the way from front to rear

Incident date: Mar 1, 2026

We purchased our 2024 Acadia in June 2025. Since we have had the vehicle, it has been in the shop going on 6 times. First the sunroof seal came off, then the antenna cover fell off, the driver side rear panel had to be replaced because it was coming off. Once all this was done then the vehicle started leaking transmission fluid, took it to the dealer to get fixed, once we get it back the coolant s... Read more

Incident date: Mar 1, 2026

We purchased our 2024 Acadia in June 2025. Since we have had the vehicle, it has been in the shop going on 6 times. First the sunroof seal came off, then the antenna cover fell off, the driver side rear panel had to be replaced because it was coming off. Once all this was done then the vehicle started leaking transmission fluid, took it to the dealer to get fixed, once we get it back the coolant s... Read more

Incident date: Mar 1, 2026

We purchased our 2024 Acadia in June 2025. Since we have had the vehicle, it has been in the shop going on 6 times. First the sunroof seal came off, then the antenna cover fell off, the driver side rear panel had to be replaced because it was coming off. Once all this was done then the vehicle started leaking transmission fluid, took it to the dealer to get fixed, once we get it back the coolant s... Read more

Incident date: Jan 9, 2026

Purchased NEW 2026 GMC Terrain Elevation, and it came with NO User Manual. I was told by the dealership (Al Serra GMC in Grand Blanc Michigan that i could either purchase one for $50.00+ dollars, PLUS TAX & $25.00 SHIPPING, or d/l it via the infotainment system in the car, WHICH DID NOT WORK! Talk about [XXX] A VIETNAM VET!!! We are both [XXX] old & need a manual, so bought a reproduction of the... Read more

Incident date: Mar 9, 2026

A few weeks ago my adaptive cruise stopped working, as well as the automatic high beam system (not sure the technical name). As there was a warning light displayed, I brought it into the dealership to have them check it out. The technician jumped in really quick, made some changes within the control panel, and the light came off. As I drove out and tried to use the adaptive cruise control, it didn... Read more

Incident date: Mar 9, 2026

A few weeks ago my adaptive cruise stopped working, as well as the automatic high beam system (not sure the technical name). As there was a warning light displayed, I brought it into the dealership to have them check it out. The technician jumped in really quick, made some changes within the control panel, and the light came off. As I drove out and tried to use the adaptive cruise control, it didn... Read more

Incident date: Mar 9, 2026

A few weeks ago my adaptive cruise stopped working, as well as the automatic high beam system (not sure the technical name). As there was a warning light displayed, I brought it into the dealership to have them check it out. The technician jumped in really quick, made some changes within the control panel, and the light came off. As I drove out and tried to use the adaptive cruise control, it didn... Read more

Incident date: Mar 7, 2026

The 10L80 transmission had a catastrophic failure just outside of the GM warranty. At under 70K miles the pump gears came apart and sent metallic debris throughout the entire transmission and exhaust gaskets converter next to the transmission. These will need to be replaced. I have found multiple cases online with this 10L80 transmission where there has been significant problems with these trans... Read more