Defroster and floor heat

2001 CHEVROLET TAHOE
220,000 MILES • 5.3L • V8 • 4WD
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TONY MAY
  • MEMBER
  • 2 POSTS
Defroster is not working and my floor heat not working.
Nov 21, 2017 at 9:14 PM
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WRENCHTECH
  • CERTIFIED EXPERT
  • 20,761 POSTS
The mode changes are made by an electric actuator located on the left side of the HVAC housing. The actuator could be bad or stripped. Sometimes the mechanism just gets stuck and you can help it along with your fingers.
It is #3 in the picture.
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Nov 22, 2017 at 6:17 AM