Rear heater not working?

Tiny
BONGARD1
  • MEMBER
  • 2004 CADILLAC ESCALADE ESV
  • V8
  • AWD
  • AUTOMATIC
  • 108,000 MILES
My rear heat does not work although the fan controls are working and blowing air. The front system is working fine.
Monday, January 3rd, 2011 AT 6:54 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

A common issue is the blend door motor at the back heater case.

https://www.2carpros.com/articles/replace-blend-door-motor

I posted the procedure below for the replacement and a picture of the location for you.

Roy

REMOVAL PROCEDURE

1. Remove the right rear quarter trim panel.
2. Disconnect the electrical connector from the auxiliary air temperature actuator.
3. Remove the retaining screws from the auxiliary air temperature actuator.

imageOpen In New TabZoom/Print

4. Remove the auxiliary air temperature actuator (1) from the rear auxiliary HVAC module.
Image (Click to make bigger)
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Tuesday, November 24th, 2020 AT 8:35 AM

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