Remove the phillips screw from behind the panel.
Remove door panel 01 deville.
2000 2001 deville door panel removal.
Otherwise the problem is in the heater control module where you turn on a c and the heat that panel has a.
Position the window fully downward.
Here is how to remove the front door panel on your deville.
Ensure the manual lock knob 1 is in the unlock position.
Position window fully downward and ensure manual lock knob is in unlock position.
Remove manual lock knob.
Theres one in the door handle lever cover theres two in the door handle pulley lift up to exspose them that will release the top half for the bottom half once you ve removed the top you ll see two screws exposed for the bottom half then remove the red lightcover at the end of the doors armrest its one there then remove the lightcover which may be.
Insert a flat bladed tool into the top service notch in order to disengage the locking clip 2 located at the front of the manual lock knob 1.
Pull the interior door handle open so you can reach the small square panel behind it.
Use a flat screwdriver to pop the panel off.
Open the door all the way and roll the window down completely.
The a c fan should come on only when you turn a c on at the dash panel only.
It has nothing to do with the heat.
Look for all external screws you see.
If the heater blower fans don t come on then look in the main box fuse for a blown fuse also.