ok on my 95 the heat only works on the drivers side and when its on the passenger side is pumping out cold air like outside temp (high 30's low 40's) witch kinda pisses me off i cant get my car to warm up just to pump ambiant air in and half is warm for a lil then cold just wondering if anyone has any ideas oh and i just got the ac condenser (?) replaced cuz it wasnt working right and tearing up my belt

i dont no how its poss to have belt problems b/c of the condenser? i would check the t-stat, and then the heater. then unhock the lines under the hood for the heating and hock a hose up to it and flush it out.

I am having the same exact problem! Heat pumps out the driver side floor and the driver side half of the defrost vents for the windshield. The passenger side gets regular air/cool blowing and so does the passenger side of the defrost vents. Really wierd.

I replaced the thermostat today just for the hell of it. Still no heat on the passenger side. Can someone offer some advice. It has nothing to do with the heater core being plugged for sure.

I am wondering if there is a blend door or if that passenger side control button on the dash heat/ac controls or on the passenger side door has anything to do with it. Wondering if it can be bypassed...

Anyone that knows for sure??

There is a blend door motor behind the glove box that causes that. You can take it off and manually turn it to let hot air come through til you get a replacement.

You'll have to remove your glove box, remove a couple screws that hold two large computer modules and let them lay on the floor. In the red circle area is where the motor is located. After you remove it , the white plastic rod sticking out will let you move it manually til you get a replacement. This is on a 95 model.

Denny,

Thanks alot....exactly what I needed!!! Also, I don't seem to be getting any warm air through the vents on the dash panel. Wonder if another door is closed or a motor is shot. Is there a fuse for the heater door motors? My heat and blower work fine; just seems that a door or two may not be functioning. Thanks alot man!

it was attached to the belt could be the belt was just shot also but i know my condesner or whatever ac thing that is on the belt was shot everytime i turned it on then off it sounded like a dyeing cat got sucked into the supercharger balls first

if anyone is online i have a problem my 1995 buick riviera is blowing out hot heat on the drivers side and cold air on the passenger side is this a easy fix has someone seen this b4 let me know please

mixxer door servo..if you pull the glove compartment out you can see it....easy fix,but you will want to find a junk yard one...dealer wants over 200 bucks for a new one.

thanks man i found it it says on another post long as u turn it it will stay like that til u get a new one its kinda cold to go to the junk yard so imma wait it out

I was able to take the servo apart and fix mine, the motor was stuck.

Mine was on the driver's side, got a replacement from Ed Morad for $20.

so if mine is blowing AC on the drivers side and heat on the passenger side, would the servo activate the compressor? i have it unplugged, but natrally direct air from outside is cold as hell! so help me out

Even when the weather was warm, heat, defrost and auto air on the passenger side of the car is ice cold. Ive checked all the fuses, I don't know what else to check. Please help defrost my friends!

You should have a second air mix actuator. One for each side. Pull your glove box and try to see if it's visible and moving.