1993 Max GXE fully loaded. The autoclimate control LED panel will intermittently dim and will sometimes remedy with a knuckle knock on the face. I have had it apart many times and reflowed just about every solder joint, run a jumper for one of the 16 wires on the ribbon cable, cleaned all connectors, etc. Problem persists. Anyone have a schematic or know of an offending component? Thanks, Ed Fisher Dallas, Tx

 

I have the same problem, please help us.

 

Take out the PCB and resolder the joints. That is how you always fix the clock and DRL control unit in our cars. The auto climate is no different.