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Dave Nova
Dave Nova, Cadillac Technician
Category: Cadillac
Satisfied Customers: 1522
Experience:  ASE Master Certification. GM World Class Certification
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Auxiliary blower only puts out hot air, Yes, 2004 sedan

Customer Question

Auxiliary blower only puts out hot air
JA: Have you checked the coolant level? Have you checked the hoses for leaks?
Customer: Yes
JA: What is the model/year of your Cadillac?
Customer: 2004 sedan Deville
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes , I have done nothjng
JA: Anything else you think the mechanic should know?
Customer: Switches seem to work but no cold air
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Cadillac Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Cadillac
Expert:  Wayne Crawford replied 1 year ago.

Hello. My name is ***** ***** I will be helping you today.

The auxiliary climate control has its own temperature actuator which is usually what causes this.

A lot of times recalibrating the actuators will get it working for a while but usually it needs replaced in the end.

Important: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.

  1. Turn OFF the ignition.
  2. Remove the battery positive voltage circuit fuse of the Instrument Panel Control Module.
  3. Wait 60 seconds.
  4. Install the fuse.

Let me know if you need anything further and please be sure to rate my service so I get credit for helping you. Thanks