Heat and air fan only works on the high setting

140,162 MILES • 4.3L • 6 CYL • 2WD
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ROBIN HENSHAW
  • MEMBER
  • 1 POST
The fan only works on high.
Oct 25, 2019 at 8:53 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good afternoon,

This sounds like the blower motor resistor. I attached a diagram of the unit for you. Check the 2 fuses listed for power on both sides. Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

Roy
Oct 25, 2019 at 9:09 AM
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