Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Buick LeSabre

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: 122,778 (12,500–250,000)
15 model years affected: 1990, 1992, 1993, 1994, more1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
125 people reported this problem
72 people shared problem details
Drivers side blows warm; passenger side cold when heat is on.
Upvoted (63)Flag Inappropriate
2002 Buick LeSabre41,000
hot air on driver side cool air on passenger side when a/c selected
Upvoted (55)Flag Inappropriate
The actuator behind the glove box is in working condition, however, when I turn on the heat, I can feel the warm/hot air blowing on my side(drivers) but it is freezing on the passenger side of the vehicle. What else could be the problem?
Upvoted (50)Flag Inappropriate
2001 Buick LeSabre91,000
Air conditioner blows hot on driver side and cold on passenger side.
Upvoted (45)Flag Inappropriate
2003 Buick LeSabre80,000
The battery died on the car and needed to be replaced. I jumped the Buick and when it started running again the air ac air flow would only come out of the defrost vents. The dash and floor vents aren't working now.
Upvoted (38)Flag Inappropriate
Air sometimes will not come out the vents, only the floor. Stop car, restart seems to help sometimes. Have replaced the vacuum manifold, but problem appears to be in actuator for the door which diverts air to vents or floor.
Upvoted (28)Flag Inappropriate
1994 Buick LeSabre120,000
a/c will only work sometimes. blows through vents then will only blow on defrost/floor. very frustrating as it works mostly when it is cooler, not good for texas heat!!
Upvoted (25)Flag Inappropriate
had to replace the actuators door on the heating and air conditioning system
Upvoted (24)Flag Inappropriate
2002 Buick LeSabre12,500
air dont blow out of vents
Upvoted (16)Flag Inappropriate
2000 Buick LeSabre95,000
there seems to be a mouse in the vent system a odor comes from the air ducts how do i get to the fan?
Upvoted (11)Flag Inappropriate
2000 Buick LeSabre202,000
Air conditioner blows warm on driver side, cool on passenger side
1998 Buick LeSabre98,000
Air condition blows out top and bottom vents will not switch to center vents
When using AC warm air on drivers side. Cold air on passenger side
1994 Buick LeSabre110,000
When on AC high the cold air blows out thru the windshield vents,will some times blow tru the dash vents
1999 Buick LeSabre35,789
Where is the actuator located at on car. The air was flowing through the windshield and floor but now it's barely flowing from the winshield or the floor. I need a diagram of ac/b heating system
1990 Buick LeSabre124,438
The air only comes out of the defrost vents on top . It won't come out of the dash or lower vents.
2000 Buick LeSabre90,285
not fixed yet
2000 Buick LeSabre20,000
A/c blower working fine,but only blows out floor vent
2000 Buick LeSabre20,000
A/c blower working fine,but only blows out floor vent
2002 Buick LeSabre225,000
warm air on driver's side and cool on passenger side when a/c seleted
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