Heater Wiring For 1984 Gmc?

[limeimac97776]

Does anybody have a wiring diagram for a 1984 GMC? My heater recently went out and its currently the middle of winter. The heater has always been janky. Im thinking there is a short somewhere because I used to not be able to get the fan to turn off unless I unpluged it from inside the engine compartment. Now it wont even turn on.

[GMstrong]

try compnine.com

[limeimac97776]

try compnine.com

 

 

I looked but they dont have anything for my truck. its all s15s and jimmys in the GMC section.

[ChevyTech77]

Probably just the switch. There is literally nothing to the wiring of this truck especially for the blower motor/hvac system.

[exracer]

did ya give the heater motor a light tap with the scrapper handle?......usually gets them to start again .....