Bought the first one in March of '06, after 11 months of fiddling around with airbag lights, sensors, and seatbelt lights that worked when they felt like it and chimed once I was going down the highway at 65 MPH even though the passenger was buckled, GM bought it back as a lemon with MANY other electrical problems. I took delivery of my current one in February of '07 and the navigation sometimes shows me driving in the middle of the Atlantic Ocean, the Savannah River or many golf courses around my house, the park assist stopped working, the headliner rattled until the service tech put an entire roll of double sided tape up there, when it rained hard one time it leaked inside down the driver side "A" pillar prompting the service department to replace the air bag in there. When the "speed control" option is turned on the radio while driving, sometimes when I want to turn the volume down it actually goes up and vice versa. The rear shocks on the autoride suspension leaked so bad they ordered new ones for me at the dealership, at +/- 20k miles, during the same rain that caused the leak, my front passenger side rotor warped while driving down the road as a result of me hitting the brakes. Remote start sometimes fails to work in the morning, it'll attempt to crank but it just won't turn over, or sometimes just do nothing but flash lights at me. The weatherstripping in the rear windshield around the opening on the actual liftgate, started to fall off, had to go to Advanced Auto Parts and get adhesive to repair it. They have replaced the rear door window trim 3 times, that's all that comes to mind for now, I'll have to check my service records to see if there is more. Oh, it has exactly 35,125 miles when I pulled in my driveway this evening, I drive 36 miles to work in one direction but sometimes put 200-300 miles a day on the beast, it is averaging 16.6 MPG and I love it, problems and all, it is more comfortable than any SUV out there, foreign or domestic. (Though I am a bit enamored with a Chrysler 300 SRT8 since I test drove one recently) The Yukon has driven from home (South Carolina) to NY 3 times, Philadelphia once, Tennessee 3 times, North Carolina twice and every mile was COMFORTABLE!!!
I drive my little yard truck (2004 Ranger) to work when it rains and get the Tahoe or Corvette out on nice days... 
