I have a 1995 Buick Park Ave. It has climate control on passenger side. This summer when I turned on the AC the drivers side got cool but most of the time the passenger side was hot (the climate control button did not help). Sometimes it did get cool though. Now that is winter it is doing the opposite. I have heat on my side but not the passenger. It has worked one time only. Any ideas on what could be wrong. Hopefully I can fix it myself.
If so, HOW?
Sounds to me like the linkage is broken on the inside of the dash area that moves the doors for vents to open or closed (HVAC), seems that there are inoperative levers preventing proper air flow.
Sounds to me like you have a blend door problem. A blend door is just a door that moves and lets air pass through either the heater core, for heat into the cabin, or through the condensor, to allow the air conditioned air into the cabin. It is most likely that the connection (either electrical or vacuum) is disconnected. It shouldn
〉 Answered on Dec 9th, 2007 by Suzanne Grego, Technician at City of Philadelphia Fleet Management