Question about 2000 GMC Sierra
The path of the air is determined by a flap situated right next after the heater/evaporator box , deep inside the dash - that flap is not moving.
There are 3 possible things that would case that:
1 - the flap itself is stuck : dust and dirt have gotten inn the box and it has seized the flap - the dash must be completely dismantled to remove and clean the box.
2 - the lever that commands the flap is detached or broken - remove the center console to access and replace it.
3 - the control button or its cable are defective - take out the center console and replace it.
A least a basic experience is required, or you risk breaking the trim pieces, making the repair a lot more expensive than it should be. If you don't have this experience then take the truck to your local shop, it will cost you around $200 for the labor and maybe another $50 for the parts.
Posted on Oct 01, 2010
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Posted on Jan 02, 2017
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