96 SIERRA 2500, BLOWER ONLY WORKS ON HIGH SETTING.
2012 GMC C2500
July, 27, 2007 AT 1:45 PM
I have replaced the blower/heater control unit, it didnt help, the relay behind the glovebox seems to work ok. I unhooked the wires from the blower motor and voltage only gets through when the blower is on high setting. I am now at a loss, where do I look next. Any suggestions would be greatly appreciated.