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: 95,613 (50,000–160,000)
34 people reported this problem
16 people shared problem details
2002 Cadillac DeVille DTS80,400Visitor
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 DTS122,000Visitor
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.
2004 Cadillac DeVille DTS54,000Visitor
Clicking in dash air does not come out of front air chanels. Not fixed yet.
2001 Cadillac DeVille DTS160,000Visitor
air not blowing out of front vents
heat & air when you start car it click,click,click ect. replaced 1 time needs replaced again not cheep
2001 Cadillac DeVille DTS80,000Visitor
Don't have a solution . Looking for advice
2005 Cadillac DeVille DTSVisitor
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.
2003 Cadillac DeVille DTSVisitor
Cold air encompasses our feet and legs.
2003 Cadillac DeVille DTS56,709Visitor
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 DTS85,000Visitor
a/c blows out of defrost vents not front vents
2003 Cadillac DeVille DTS160,000Visitor
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 DTS59,500Visitor
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 DTS108,000Visitor
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 DTS83,000Visitor
ac get cool then warm
over heats, but it happens qucker when the air conditioner is on.
Will a smog pump are a secondary air pump cause your car to run hot? Are what are the symptoms...
Mode actuator switch needs replaced and I understand this is a expensive job.
the straight on vent opens once in awhile after a clicking noise , all other locations work fin...
in the same time , the central panel passenger side and passenger door side gives hot air. I'v...