2012 GMC yukon denali, won't move forward!
I just purchased a 2012 Yukon Denali, literally 4 days ago, it has 25,000 miles. I stopped at a red light, and when I tried to move forward it simply revved the engine, and would not move! I tried to put it in park and back into gear, and nothing. I tried to turn the car off and start up again, and nothing! I had to have it towed back to the dealer. Once it was there, they told me that it was driving fine, and there are no signs of an error on the computer or mechanical failure. I now have the truck back but i have no answers! I am scared to drive it. Please, if anyone has any ideas, please let me know.