GMC Acadia Change Vehicle

"About 6 months after purchasing the car, the air conditioner was on and the vents were blowing out hot air into the car"

"The climate control feature uses two sensors to regulate the interior temperature of the vehicle: One sensor behind the grille, and one at the front center of the dash. The outside one senses air temperature, the inside one senses sunlight as it also controls the automatic headlight feature. The problem seems to be that the inside sensor interprets sunlight as heat. So, in the winter, when it interprets sunlight as heat, it will activate the A/C. On numerous occasions this past winter, the A/C would come on when the outside temperature was in the 40's. In order to warm the interior of the car, I had to turn off the climate control and manually activate the heater. I park the car in a carport. In the winter when I started it up, the heater came on, the steering wheel heater came on, and the seat heaters came on. After driving the car a for about 15 to 20 minutes in bright sunlight, the heater would go off and the A/C would come on; with outside temps in the 40's. I took the car to the dealership to have this problem checked. The paperwork indicates they ran the HVAC system in the morning and again in the afternoon and found no problems. They did not indicate whether or not they checked the dashboard sensor. I'm not sure if they even understood what the problem was. Now that warm weather is here, the climate control seems to work just fine. Needless to say, I am apprehensive about how the system will work when cold weather comes again. Based on past experience, I would have to say that it simply does not work in cold weather."

"Take Steering warning with continual bells when I did not leave the lane. Only way to stop the warning and chimes was to pull over and stop/restart. This happened twice. Dealer checked and said no issues"

"Please see previous response"

"Door locks would not lock/ unlock electronically. Manual operation only."

"I was locked out of my car and the keyfob would not work. Luckily I was able to open the back hatch to crawl through the car to unlock the front door and operate the car."