Heater controls in a 1990

[scarbrow]

I had the gm manual till thursday if I would have now we couldve met up again. But I do have a haynes manual and it shows the diagram for the heat and ac controls if ya need to borrow it or anything. I might be able to just scan it for ya also.

thanks, might have to do that.

I have another question that might help ARE THE HEARTER CONTROLS CONTROLLED OR POWERED BY THE FACTORY 1990 TRUCK COMPUTER?