Heater blower

2002 PONTIAC SUNFIRE
85,000 MILES • 4 CYL • 2WD
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KELVIN1805
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  • 1 POST
My heater blower on 2002 Sunfire only works on high. Changed 30A fuse twice under hood and also changed blower resistor. What else could it be ?
Jan 24, 2011 at 2:30 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JDL
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 16,098 POSTS
In the diagram, do you see blower resistor terminals A B C D, those are grounds. Maybe a problem with havc control assembly. That assembly controls ground for different speeds.
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Jan 24, 2011 at 7:13 PM
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