Originally I had cool on the drivers side and heat on the passenger side. I changed the drivers side actuator, good distribution for air conditioning, but I have no heat.
SOURCE: 1996 buick regal blows hot air on passenger sice when ac on
The controls are controlled by a vacum box under the dash on the passenger side. It is possible one of the lines came off or one is cracked. If this is not the problem then try switch in back and forth a few times so see if it can get the flap unstuck, if not you will probably have to tear the air duct apart and get it moving.
SOURCE: 99 Buick Regal LS dual climate control. No heat passenger side.
the motor for the passenger side
blend door is shot
SOURCE: the air conditioning in my 1998 buick park ave is
It is most likely low on freon,not much ,just a little,just add about a can.
SOURCE: 2001 buick regal dual ac.
It needs to be recharged, the compressors are the likely leak on these.
SOURCE: 1998 buick regal gs heat blows hot on passenger
Same problem on my 98 Regal GS; remove glove box, locate the blend door actuator, (black odd shaped box with metal "ring"). Remove the box and manually turn the blend door shaft it was attached to. If you get cold air, it's the actuator you removed. About 30-40 dollars.
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