i have a friend that has a 02 1500 qc 4x4 sport laramie .... and the drivers side seat warmer wont work but the pass side will . When you push the high side it starts flashing on the low side and never comes on does anyone know what the heck is going on?

 

I have the same problem but on the passenger side. It means either the element in the seat is bad or the temperature sensor is out of range(aka broken)