Having problems with your 1998 Oldsmobile Silhouette ?

My 1998 olds silh. back ac doesnt blow cold .

\015 The back ac blows warm but everything else works great\015
Posted / edited by AnonymousUser on : 15-01-2018

Answers :

Before you tear apart the dash to get to your driver side servo motor-disconnect your battery for 5-minutes, with both front doors open reconnect your battery(this resets your on board computer),then turn your car on and turn your a/c on to high with the coldest setting on both sides for dual air systems and leave the car running for a few minutes. you will feel the air cold again. there is a sensor on the passenger side that will trigger the servo motor to not move if the front door is closed. servos usually get stuck after the power was cut off. if this does not do it, have your a/c sytem checked for leaks.

this is also worth considering:

Dual Climate System. If you're not familiar with this setup, there's a driver and passenger climate setting. The passenger setting knob is on the right of the climate control console. If you have already properly adjusted this setting, there's a problem with the servo motor being out of the preset range for the a/c & heater doors. Every time power is cut from the unit, the servo resets the doors by doing a "sweep" from full cold to full hot maximum range. Over time the servo will fall out of range from constant full range flexing, and the part that controls the range limit must be replaced. Reseting the main module by disconnecting the battery has a slim chance of successfully fixing the issue.
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My 1998 olds silh. back ac doesnt blow cold .


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