A/C not blowing thru front?2003 Deville
 

hello all,bought a used 2003 deville,air blows thru bottom and front windshield defrost but not thru front on dash??? every now and then it blows ok thru the front how it should then stops??? i have no idea what it could be!!any advice is appreciated,thanks for your time,Isaac.

it sounds like a mode actuator but it also could be the control head

does it blow in just the bottom ----both sides drivers side and passenger side?
does it blow out the side vents?
does it blow out the defrost?
all single not joint blowing?

try this to recalibate the actuator

1. 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.
2. Install the fuse.

Ipcm??
 

air blows thru all spots except dash a/c,defrost is ok,side vents are ok,bottom is ok..defrost and bottom blow at the same time..where can i find the Instrument panel control module?? i just bought this car,and am learning as i go..all help is VERY appreciated!!Thanks.

as it changes from floor to dash
do u feel any out the vents
it almost seems like the centre vent is missing
on a/c it blows out the side vents correct

if u put your head on the floor driver side u could actually see the door lever move

when swithing from floor to dash,i can hear something move in the area of the dash where the vents are,but no air flows thru...almost as something is stuck.

well look under the dash and see if u see the lever moving
its may be a door actuator
well there is one on each side
but check driver side first
then pull the glove box
and u should see one behind there to if i remember correctly

where can i find the positive voltage circuit fuse of the Instrument Panel Control Module???thanks.2003 deville

just remove the negative battery cable
wait and replace it
clear codes
and go
same thing

does this clear the codes?or do i have to do something else to clear??thanks

well ,this will clear some of them but it can also set codes
so u have to go through the section that tells u how to pull codes and clear them that way