One problem related to lose power steering has 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.
Happened two times yesterday. 2007 Yukon denali odometer: 191,707 engine hours: 1443. 9 first, stabilitrak control turned off and engine power was reduced illuminated on the message center of the dash board. Car would not accelerate above 20 mph. When I would try to push the gas petal there would be a shutter in the rear of the vehicle. I was able to put the car in park, turn it off and tried restarting. Same issues continued. I limped to my work a less than a mile away to try and figure out what was happening as I had myself and 4 kids in the car after trick or treating. I shut off the car and waited for a bit while I read online what was causing this. Upon restarting the car, it started working again as normal. Safety risk when you can't accelerate past 20 mph on a 45 mile per hour road. Second occurance was a few hours later. I turned the car on to leave and the same things happened, this time it was driving like I had lost my power steering and no engine power. Luckily, again, I was in a spot to pull off to the side, turn the car off and made it home okay. This car has a brand new engine. Upon reading here and some other things online it seems the stabilitrak has numberous reports of this same thing. Luckily I have been in a spot where it didn't become dangerous and I knew what to do based on reading here. I use my Yukon for work so can't have this happening and it's dangerous for myself, my kids and other drivers on the road if they happen to be behind me when it happens. Hopefully with enough complaints something can be done to fix this issue. I have included a pic of the symbol that illuminated on my dashboard when this happened.