Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Cadillac DeVille

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.

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Average mileage: 110,881 (5,400–260,000)
16 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
414 people reported this problem
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problem details
how do i change this actuator motor . can i do it from under the dash or does the whole dash have to come off
2000 Cadillac DeVille 132,000 mi,
cold air driver side vents /hot on passenger side vents
With AC on driver vents blow out hot air and passenger vents blow out cold air.
Clicking sound in dash when ac/heat system activated, air only comes from defrost vents.
cold air coming out of driver side vents and hot air coming out on passenger side when a/c switched on.
2002 Cadillac DeVille 86,000 mi,
air from top vents dont flow and ticking in the dash.
2005 Cadillac DeVille 14,000 mi,
When a/c is on, hot air blows from passenger side vents.
2003 Cadillac DeVille 74,000 mi,
a/c failed to work...had it checked & the gear on the actuator motor that sends the air from the floor to dash vents was partially stripped causing it not to cool off the car...actuator motor was fine but the gear was not the dash had to come out and the bill was around $800.00for a $1.00 plastic gear
2000 Cadillac DeVille 140,000 mi,
when ac is on the pasenger side blow's hot air
cold air on drivers side & hot on passenger??? HELP////
Blower working in floor and back seat, but not from the dash. Dealer had to remove dashboard to get to actuator.
when start car this ticking sound starts for about 30 sec, i cannot get air or heat thru center dash vents all other vents work fine. sometimes air or heat will come thru center vents and then will cut off but will still come thru other vents.
2000 Cadillac DeVille 117,000 mi,
When engaging the heater a fast clicking noise prevails for several seconds and then stops. Air will not come through the vents unless I turn the air on.
AC BLOWS THRU VENTS THEN SWITCHES TO DEFROST THEN BACK TO VENTS, CLICKING NOISES IN DASH THEN IT STOPS BLOWING ALTOGETHER
2001 Cadillac DeVille 130,011 mi,
Air conditioning blowing up through dash vents right at the windshield and not through the correct A/C vents. Replaced mode actuator which fixed the problem. The mechanic was able to do the replacement without taking out the dash. When I took it in they said, the dash would have to be removed to do the work. This saved me a good amount of money with the time savings. 5/7/2012
2003 Cadillac DeVille 84,000 mi,
hot air in a/c mode
1997 Cadillac DeVille 130,000 mi,
Heating and A/C temperature and air delivery mode door actuators may fail
2004 Cadillac DeVille 94,000 mi,
Driver's side AC is cold, passenger side is HOT. Yesterday it to shop, they added freon, drove it last night and hot air still blowing out passender side. This morning took it back to shop, apparently a small amount of freon had escaped, they refilled and added dye, I was told there may be a leak in compressor, to bring it back if same happened so they could check where dye indicated a leak. Now, from reading similar problems on forums, it sounds like acuator needs attention, not compressor.
2002 Cadillac DeVille 123,794 mi,
rear area dlows hot air while a/c is on
2002 Cadillac DeVille 70,000 mi,
Air was only blowing out at the feet. Dealer repaired a/c mode door actuator for $450.00.