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98 Sierra A/C from hell.....help

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Old 10-09-2010, 03:27 PM
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Default 98 Sierra A/C from hell.....help

So out of nowhere air no longer comes through my vents and I can't figure out why.No fuses are blown, blower motor is running, I see two blend actuators and they move when settings are changed, there is no cabin filter in 98's to clog, no vacuum line issues that I can find, you can hear the vents change settings when you adjust the ****, just no air blowing through them.
What am I missing. Any help is greatly appreciated.
Old 10-09-2010, 06:52 PM
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Maybe the motor is running but the fan isn't turning.. Or the fan is full of leaves .
Old 10-10-2010, 11:44 PM
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Look to make sure all of the plastic links are in place. The mode door actuator is the one by the gas pedal mounted on the side of box. If all is moving and intact then the damper shaft probably twisted off inside the box I have had a couple of them do this. And to fix it: drum roll please...... pull the dash blow down the a/c and remove the airbox.
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