Hi D,
I too have the same issue...imagine that!!! :0 Did you take the dash out yet? I had a chance to take a look back there and I was not sure which servo was giving me problems...how did you figure that out. There are 3 on the gs. Anyway when I removed the dash I found that one of the blend doors..ie drivers side becase that is the one blowing cold air, is not closing all the way. So I just gave up because the weather changed for the better and now it's cold again and so am I. I'd like to figure this out with you because I know the units are about 130-150 per servo. What about the temp sensor below the key ignition? Could be a bad sensor, the gs gets is cabin reference from 3 sensors also. Two light (in the dash) and one air flow temp sensor, very similar to maf sensor.
I'm sure one of these is the issue:
heater head unit
2 sun sensors
cabin air temp sensor and hose
3 cabin servos
cabin blend doors.
Now I read that another gentlemen, I believe sakorti???? maybe said he had the mark levinson navigation. I think their heater and sound system is integrated, which would lead me to believe that could possibly rule out our head unit. The hose that draws air over the temp sensor is kind of cheesy....my sensor had a lot of dust on it so I do recommend everyone clean it. Lets start there and see what happens...give me some feedback I'd like to know what happens.
Erik
my name is sakataj not sakorti..............yes i have the ML nav so its not the head unit. FIRST AND FOREMOST DO NOT TAKE OUT THE DASH ITS NOT NEEDED FOR THIS.if your drivers side is blowing cold air the servo and blend door ARE STILL ON THE PASSENGER SIDE and you dont need to pull the dash!!! u def hit the nail on the head,NORMALLY this is a servo motor problem and yes the rx's have a problem with this just like the gs (FINALLY WOW EITHER A SMART NOOB OR A NOOB WHO KNOWS HOW TO SEARCH 1ST, I SAY NOOB BUT U BEEN ON HERE FOR ALMOST 3 YEARS JUST NO POSTS REALLY but MY HATS OFF TO YOU darrylg33 FOR DOING YOUR OWN RESEARCH 1ST :D ) ........there are technically 4 servo motors on the gs series. 3 of them are on the right side (passenger) (if your counting the fresh air recirculation servo which some people dont) and the temp servo and the mode servo (plus the one on the drivers side, IT does require pulling part of the dash but the other 3 dont.......just take out glovebox. i have done this and fixed it but since i was being cheap i used, used servo's and they out now again too! wont do that again......if u remove glovebox...ask guytelephunken for a pdf on this or pm me and i can walk you throughh it....you'll see the 3 servos under the dash (damn i wish i had finished my DIY write up already) but you'll know which one it is......it will be crunchin and making computer harddrive whirr noises as its failing to close the blend doors all the way.
with glovebox off,cd player removed,plastic shroud removed......turn car off.......start it and listen for servo making funky noises i promise you'll know which one it is. i just replaced both (i dont wanna deal with it again) and go from there....i found some for like 139 and 160 but i have to find my notes. i told you i started a DIY with like 100 pics but i havent finished it....will do so when i put in new ones AGAIN
pm me or post on here if you need nething else. oh yeah and if AFTER doin this u still have ne problems.......then look into
these
heater head unit
2 sun sensors
cabin air temp sensor and hose
but not normally these and i would be willing to bet its just the servo motor.
Hey Brian...sorry about the name confusion, please forgive the NOOB. I don't post much and keep to myself but when I can help I try. I've been fighting with the climate control for about a year or so. I's kinda funny because, as you know it kinda creeps up on you and then you're cold. realizing there is a 7 degree spread of temp from right to left.
I'll pm you!