Defroster and floor heat

2001 CHEVROLET TAHOE
220,000 MILES • 5.3L • V8 • 4WD
Avatar
TONY MAY
  • MEMBER
  • 2 POSTS
Defroster is not working and my floor heat not working.
Nov 21, 2017 at 9:14 PM
Advertisement
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
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.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Nov 22, 2017 at 6:17 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.