One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.
Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Cadillac DeVille DTS
Average mileage: 93,119 (45,000–160,000)
37 people reported this problem
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Viewing 1 - 19 of 19 problem details
2002 Cadillac DeVille DTS 80,400 mi, Visitor
Stopped blowing air through the front vents. Started with a clicking noise under the dash and then it would finally allow air through vents. Then it stopped clicking and no air comes through the front vents.
2005 Cadillac DeVille DTS 122,000 mi, Visitor
A/C comes out of driver side vents....heat comes out of the passenger side vents. No noises before. Does not happen everytime, but seems to happen when it is hot outside and you want a/c.
2003 Cadillac DeVille DTS 92,000 mi, Visitor
blower blowing not sending cool air out dash vents
2004 Cadillac DeVille DTS 54,000 mi, Visitor
Clicking in dash air does not come out of front air chanels. Not fixed yet.
The front air conditioning ducts will not blow cold air.
A/C BLOWS ON THE DRIVER SIDE BUT HEAT IS COMING OUT OF THE PASSENGER SIDE. IF I PLACE THE TEMPERATURE ON ANYTHING ABOVE 70 DEGREES, IT'S NOTHING BUT HEAT COMING FROM VENTS, BUT IF UNDER THAT TEMPERATURE, COOL AIR COMES OUT.
heat & air when you start car it click,click,click ect. replaced 1 time needs replaced again not cheep
Clicking for 90 seconds, then times out. Not fixed yet.
2005 Cadillac DeVille DTS 45,000 mi, Visitor
cool air on left side but only hot on the right side
2001 Cadillac DeVille DTS 160,000 mi, Visitor
air not blowing out of front vents
2001 Cadillac DeVille DTS 80,000 mi, Visitor
Don't have a solution . Looking for advice
Cold air encompasses our feet and legs.
2003 Cadillac DeVille DTS 56,709 mi, Visitor
grinding noise from under the dash, almost sounds like a gear is skipping really fast. I noticed that my son was touching the rear control with his foot and that was making the noise in the dash. turn off the rear heat and the noise goes away.
2001 Cadillac DeVille DTS 85,000 mi, Visitor
a/c blows out of defrost vents not front vents
2003 Cadillac DeVille DTS 160,000 mi, Visitor
Everything was working fine and one day I went to start my car and a loud clicking sound started in the center of my dash and the heat stopped coming out of the chest level vents and sometimes the defroster vents. now it's summer and the problem is intermittent with the AC (MOSTLY no AC chest level)I haven't had the money to have the dash torn down and replace the cervo or door gears. I hear it is a big job, and lots of hours of labor. ABS
2001 Cadillac DeVille DTS 59,500 mi, Visitor
the car runs and sounds fine. I did not fluttering under the dash like the vents were moving on there own. Now that its cold out and I turn heat up it comes out cold. When I play with the temp knob eventually the heat starts working but still not 100%
2002 Cadillac DeVille DTS 108,000 mi, Visitor
a/c doors make clicking sound at startup, at first it would correct itself aftert 5 minutes or so, now it only works when it wants and never through front vents.
2003 Cadillac DeVille DTS 83,000 mi, Visitor
ac get cool then warm