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: 134,674 (12,500–887,687)
15 model years affected: 1990, 1992, 1993, 1994, more1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
155 people reported this problem
93 people shared problem details
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?
Drivers side blows warm; passenger side cold when heat is on.
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.
2002 Buick LeSabre41,000
hot air on driver side cool air on passenger side when a/c selected
2001 Buick LeSabre91,000
Air conditioner blows hot on driver side and cold on passenger side.
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.
had to replace the actuators door on the heating and air conditioning system
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!!
2002 Buick LeSabre12,500
air dont blow out of vents
1998 Buick LeSabre98,000
Air condition blows out top and bottom vents will not switch to center vents
2002 Buick LeSabre200,000
Air conditioner works good but when you turn over to heater it still blows cold
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?
2000 Buick LeSabre234,000
Hot air coming out all vents even when a/c is on and compressor is working.... Even when the whole system is off hot air still comes out all vents...
2000 Buick LeSabre202,000
Air conditioner blows warm on driver side, cool on passenger side
2000 Buick LeSabre285,000
Heat doesnt work on drivers side blows cold air but passenger side is hot
When using AC warm air on drivers side. Cold air on passenger side
heat and air controls do not work.passenger side cold drivers side warm
Ac work's fine but no heat
2005 Buick LeSabre72,000
When air conditioner is on, right side is blowing cool air, driver side is blowing warm air, freeon was added about 5 weeks before but mechanic did not feel there was a leak, it seemed to work okay for about 3 weeks
Heat does not work all the time
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AC blows cold air, flow is mostly in the floorboard, even thought the control is set on "mid"....
car does not heat , AC works Great
AC is not very cool on driver side, but cool on passenger side. Dealer added freon previously a...

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