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2003 Escalade
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Discussion Starter #1
Hello and thank you in advance for your assistance.
There appears to be at least two problems beginning with the front heat/AC. The fan is running, but no (or very little) air is coming from the vents. The fan motor had quit, but replaces it. No problems.

Second, there is no air flow at all from the rear vents - cannot even hear the fan running.

Suggestions?
-Rex
 

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03 cadillac escalade
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11,902 Posts
The front could be the actuators or control module

Work the knobs with the blower off and listen for the actuators(you should be able to hear them as you work the controls)

The rear system sounds like the blower control module(you can bench test the blower with straight 12 volt)
I have a how-to thread on the rear hvac system that shows how to get into the system to check it out
 
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