Quote:
Originally Posted by DeWyaneSSR
HI MY HEATER SWITCH ONLY WORK ON NO#5 IF ANY ONE CAN HELP ME OUT SEND ME A MESSAGES IF I TURN IT ON 1-4 IT WILL NOT COME ON WHAT DO DAT SOUND LIKE. 
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You need a new Resistor Array. 20, bucks at GM. I posted the Part # on another Thread. Do a search on Heater. If you don't find it. I will be back in my Shop in about an hour. Thats where I have the Part # stashed.