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.Google+
Car Problem Reports
Cadillac Seville SLS Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail
Cadillac Seville SLS Problem
Average Mileage: 107,340 mi (37,000 mi - 215,315 mi)
Visitor, 2000 Cadillac Seville SLS, 120,000 mi
Right side cool, left side hot on AC. Actuator door not working. If this so common why isn't it a recall?
Visitor, 1995 Cadillac Seville SLS, 157,000 mi
Air will not blow from the front vents . but it will blow air from the rear vents.
Visitor, 1998 Cadillac Seville SLS, 154,000 mi
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.
Visitor, 2000 Cadillac Seville SLS, 87,000 mi
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.
Visitor, 2000 Cadillac Seville SLS, 43,000 mi
Passenger side blows heat only, even when AC is on.
Visitor, 2004 Cadillac Seville SLS, 174,000 mi
heat blows out back seat vents but VERY little in the front
Visitor, 2003 Cadillac Seville SLS, 108,000 mi
Airflow stays to face, and will not switch to defrost
First my driver side started blowing hot air then the rest of the car is blowing hot air.
Visitor, 1998 Cadillac Seville SLS, 100,000 mi
ac blowes hot air on drivers side and cold air on passenger side
Visitor, 2000 Cadillac Seville SLS, 49,000 mi
Passenger side blows heat when the AC is on. Driver's side is fine.