Here we are again with another issue with our horrible Yukon XL. Most every time we go over pavement that is uneven we get a creaking or popping sound in the rear of the car that can be felt under the middle seat. Our dealer actually hears this sound but they cannot locate it or fix it. We have had our car in the shop numerous times (it stays there a lot) and our dealer said they performed a TSB "fix" on it but the sound is just as audible as it was when it started about six months ago. Unlike the vibration which has been there from day one when we made the biggest purchasing mistake of our lives (April 2015) this one only started about six months ago. All date I use are approximate because our car has so. I have crap wrong with it until I honestly can't keep up. If you have a fix for this popping please contact me because this is driving us crazy. We are at the dealer so much until we know everyone by first name and they always ask why GM hasn't replaced our car yet and I am wondering the same thing...

When going over a large speed bump or going up a steep driveway in reverse there is a loud squeeking in the back. I thought something was wrong with the shocks but when we took it to the dealership they said everything was ok and that a line that has to do with the emergency brake was rubbing something?? Anyway, whatever they did not fix the problem. Overall disappointed in this car. I spent what I think is a lot of money on it and it seems to have a lot of little problems, none of which are repairable because nothing is broken according to the dealership.