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

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.

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Average mileage: 112,749 (37,000–217,089)
11 model years affected: 1994, 1995, 1996, 1997, more1998, 1999, 2000, 2001, 2002, 2003, 2004
57 people reported this problem
28 people shared problem details
Air will not blow from the front vents . but it will blow air from the rear vents.
Right side cool, left side hot on AC. Actuator door not working. If this so common why isn't it a recall?
Airflow stays to face, and will not switch to defrost
heat blows out back seat vents but VERY little in the front
Hot air blowing out from vents..all 4 front. Took to a mechanic he charged system. Still blowing hot. Said there was a leak in line behind dash. Got it back. 2 passenger vents cold, drivers side still hot. They said they can't figure out what's wrong. Taking it to Cadillac. I'm sure it's the Actuators as most state.
Passenger side blows heat only, even when AC is on.
A/C vents on driver's side of dash have no air flow. OK on passenger side
not fixed yet...blows hot air driver side, now, no air at all from ac dash vents. Recharged, blew cold for 1 hour, then back to the same. Time to take to a reputable shop.
Air will not blow from front vent but it blow from the rear vent
Happens mostly with windshield defroster. Seems no air (hot and cold alike) will blow out of the dash vents. Also seems like it happens to the bottom floor heater vents.
hot drivers side cool pass. side
Ac works sometimes. Mostly not working.
I have Heater on left, ac on right when I turn on the ac
cold air comes out of back vents but not front
First my driver side started blowing hot air then the rest of the car is blowing hot air.
Heater not working..blowing cold air
Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Cadillac Seville SLS
Blower motor will not shut off when I turn the car off.
Driver's side blows hot air while on AC. Passenger side if fine.
Right side blows heat all the time, even with AC on. Left side blows cool almost all the time but will eventually heat up. Not fixed
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