Five problems related to automatic transmission have been reported for the 2007 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 GMC Yukon based on all problems reported for the 2007 Yukon.
This new vehicle has shifting problems. Sometimes the rpms will reverse when you stomp on the gas. It doesn't respond. This is a safety issue in that if you pull out into traffic, you may or may not get the acceleration needed to avoid impact. The transmission goes crazy. The local GMC certified repair service tech said that they have been instructed not to try to work on the system. GMC is aware of the problem, but there are no solutions. It will actually miss and loose rpm's when you accelerate in mountain terrains. It is only somewhat reliable in highway travel that is flat. Someone is going to get killed soon if not addressed immediately.
Driving at about 20 miles per hour, excelled to get past another vehicle and the vehicle basically stopped, threw us(kids, myself) back, almost in a whiplash type manner. As I tried to excel the engine just revved and the car would not move. I put into 3rd, but when I made a stop I had to put into 2nd. Stopped again, had to go to first, wouldn't move in any other gear and barely in first. I was near the dealer thank goodness and pulled in there.
A service light in the brand new 2007 GMC Yukon denali xl came on in the vehicle. After the service team evaluated the vehicle, we were told that the control module in the vehicle would need to be replaced. A couple of days later, we received a call informing that the entire transmission in the brand new vehicle needed replacement and this concerns us for many reasons. This is a brand new vehicle with less than 4000 miles and we need to have our transmission replaced! we noticed before the light came on in the vehicle that the truck would sometimes slip while driving and we thought that it was breaking in, now we realize that it was much more serious and that this problem could have turned into something much larger. Our transmission could have locked while we were driving or worse while driving injuring us or others on the road. The transmission has been replaced, but has the source of the original problem been solved???.
2007 GMC denali rolled backward after key was removed and vehicle in "park". Consumer was unable to stop vehicle as it rolled about 100 yards in length down approximately 20 feet. Consumer could have received major injuries as vehicle went over a 4 foot wall during incident and she was unable to get in to attempt to stop, but had to hang on steering wheel in order to not get run over.
2007 GMC denali has a pull when it is not moving. Consumer states that the dealership can not find the cause of the problem and wants to know if there are any recalls. The consumer noticed an overwhelming jerk while sitting at stop lights, in the driveway, or just stopped for any reason. Also, when the consumer removed her foot from the brake to accelerate, a thump was felt. The consumer stated if felt as though something was wrong with the transmission.