Defroster and floor heat

TONY MAY

MEMBER
2001 CHEVROLET TAHOE
5.3L
V8
4WD
220,000 MILES

Defroster is not working and my floor heat not working.

Tuesday, November 21st, 2017 AT 9:14 PM

1 Reply

WRENCHTECH

MECHANIC
20,757 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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