2002 GMC Envoy blower

2002 GMC ENVOY
79,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MARP
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  • 1 POST
The blower on the air conditioner only works when the knob is on 4 otherwise on 1, 2, 3 and 5 it's just like the air conditioner is off. Is there a fuse or something I can replace?
Jun 23, 2008 at 3:14 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Try the blower motor resistor, it's on the a/c plenum, next to the blower. Test for power at the connector in all settings. If power is present, check the switch.
Jun 23, 2008 at 3:17 PM
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