Heat & Air not working

1992 GMC SONOMA
137,000 MILES • 6 CYL • 2WD • AUTOMATIC
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DREDDMAN1976
  • MEMBER
  • 1 POST
i put in a new heater blower & a relay switch. the heat or AC doesn't kick on at all, when i start purchased the truck six months ago it did work. I noticed my heater cord leaking antifreezer fluid, i aslo changed that out three days before i changed out the other two parts i'm wrote in the first sentence. i checked the fuse in the panel box for the heat/AC, it was good. i changed it out hoping that wouldv'e fixed the probelm. the will not work in low or high. someone said it maybe other fuse behind the glove compartment box. i take out that and didn't see any fuse their, i don't know what else to do. please help?
Jan 27, 2011 at 10:30 PM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
If the blower motor isn't working, check the blower motor resister, then the blower motor relay (under hood) and then work to the switch and continue until you locate where the power is lost.
Feb 14, 2011 at 3:09 PM
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