A little first hand experience to pass on to others. I have a 2012 LTz and the drivers seat quit going all the way back. Took it to the dealer and they said had to replace the whole lower seat rack. Couldn’t just replace one motor. That part is over $400 dollars and you have to pre pay for it when ordering. So the part comes in they install it and it still won’t go all the way back. Turns out the pins in the wiring harness weren’t getting a good connection and it wasn’t repairable. So we had to order a harness which we are positive was the problem all along. So if you are having seat problems check the harness first, it’s a whole lot cheaper.