Seemingly at random a warning will pop up on the driver dashboard -??Steering assist is reduced at this time-??. This will lead to a engine coolant temp reading of 0 degrees, no a/c and reduced steering functionality. Through further investigation the OBD code P0128 tells us it-??s a faulty Thermostat or Thermostat sensor. Even if you get these parts replaced, the issue still comes back. I-??ve seen these exact complaints at least a thousand times across multiple years of this model/make 2016,2017,2018,2019. This is clearly a manufacturers fault and needs a recall before people get hurt.

- Spokane, WA, USA

The -??steering assist reduced. Drive with care-?? A/C turns off and fan kicks on high. Transmission temp flatlines. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Carson City, NV, USA

Power steering reduces and the temperature gage wont work and the fan is extremely loud so it decreases the steering and increases the fan so it can cool down the engine. Others have submitted a recall form for this same problem

- North East, PA, USA

While driving I got the alert in my cluster that -??power steering assist reduced-??. I also noticed there were many other individuals in gmc forums that have had the same issue.

- Shelton, CT, USA

Numerous occurences especially recently of shift vehicle to park when vehicle has been parked, turned off and already shifted into park position. Several occurrences where almost every time within 24 hours I use my cruise control and air conditioner at the same time my check engine light will come on as well as the stability trac indicator which then causes my air conditioner not to work and inability to start the vehicle due to having a check engine light on.

- Grand Island, NE, USA

I have numerous warnings, shift to park, steering, cross traffic, this endangers myself and anyone else around me, i have read several class action suits involving these problems and it could cause my vehicle to pose a danger, I have taken my vehicle in to a certified dealer and they state there is no known recalls associated with my vehicle which is strange because GMC knows that there are thousands of vehicles having the same problem, did I buy a lemon? These problems are clearly manufacture related and in no way normal wear and tare. I should not have to compensate these issues when I paid near 40,000 for

- Byron , MI, USA

This vehicle has always since we bought it gave us tremendous problems while driving during a snowy day. Brakes typically do not work, at times even going through a red light and thankfully not been in an accident. Recently, the stability control system and the antilock braking system stopped working while under a snow storm. Unfortunately, we took it to the nearest delearship to get it fixed and we were told that the problem was due to the snow, but after the snow everything was good. Unfortunately, people do not have the money to pay for a vehicle and have it parked during the winter, that is what is happening to us. Because nor the dealership or GMC has done anything to help. This has been reported since December 2018, the vehicle has 34500 miles on it and is relatively new now, but we should not have these issues. It is of our knowledge that many people who bought this vehicle have the same issues. It would be good if they accept these vehicles have issues and correct them prior to promoting and selling to customers. Since they did not correct these issues prior to some individuals to purchase the vehicle, they should work on a solution via a re-call to avoid any injuries to families of their vehicle's owners.

- South Holland, IL, USA

Shift to park known issue has started. I've had the car for 1 yr. 5 months. I know there are lawsuits on this issue. Continuous issue and getting worse. This needs to be taken care of by GM. It is epidemic in their Acadias. Stationary and putting it into park. It doesn't recognize it's in park! it's been occurring off and on over a week, not today, every time I try to turn off the vehicle.

- Syracuse, IN, USA

On separate occasions, both parked turned off and running down highway, the dash lights lit up and alarms chimed. Car wouldn't start, no cold A/C. the "service power steering" message displayed. Car didn't turn as well. Couldn't shift. After doing so for a about 2-3 minutes it would go back to normal. The attached photo was while driving down the road you'll notice it doesn't measure any RPM's however the car is moving about 40mph

- Kannapolis, NC, USA

In motion on the highway 401 North Ontario Canada, the vehicle erratically increased speed and brakes were noir effective, lost control of the steering wheel which caused a massive accident involving multiple cars and resulted in multiple injuries.

- Columbia, MD, USA