2001 Cadillac Concours

2001 CADILLAC DEVILLE CONCOURS
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01CHRIS
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2001 Cadillac Concours

Cadillac deville dhs 2001...I checked both of the codes section dim and ipm no codes where found..and my heater stills blows only on max heat, and when I press the a/c off button the heat does blow a little warmer.. what's next for me to check...
Oct 1, 2010 at 3:29 AM
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FACTORYJACK
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At this point, there is not much you can check without a scan tool. If there are no codes, the next step would be to view HVAC data to see if a fault is shown. Things like comparing sensor data, and inputs and outputs. I did a search, and there are no service bulletins matching your symptom. You can try this recalibration procdure and see if operation improves.

Calibration Procedure without a Scan Tool
Turn OFF the ignition.
Remove the battery positive voltage circuit fuse of the Instrument Panel Control Module.
Important: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.

Wait 60 seconds.
Install the fuse.
Oct 2, 2010 at 9:22 AM
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.