Hey thanks... but all of the wires are factory harnesses.. every part and plug is factory GM stuff already installed. The plugs for the seats were already in place all i did was plug in the new seats. I am trying to find out if this is a programming issue. GM vehicles are steadily becoming more like a laptop rather that a car. The current speculation is that there is a module that does not recognize the seat heater because they were not progammed for it.. I am hoping that someone has futher info to either prove this theory or disprove it and send me on another direction. The fuse for the seat heaters was even in the fuse box.. So i am hoping to do this with as little fuss as possible the new leather seats are awsome.. Thanks