Question about 2000 GMC Sierra
2000 gmc sierra 1500 5.3 v8. After turning heater temp control back to cold from hot, air still stays hot??. Also, all air comes out of defrost vents and will not change to other locations when selector knob is turned??
Your heat/cool and vent selection options are controlled by engine vacuum through small clear tubes attached to the rear of your climate control interface. Other vehicles have small steel pull wires that operate the desired changes. You might try removing the trim and any fasteners affiliated with the interface/console. GENTLY pull outward and look to see if any of these tubes are pulled off or cut/damaged. Did anyone recently install a new stereo in the vehicle? If so, the vacuum tubing and or pull wires that change your outlets could have been damaged when the stereo unit was pushed into place. Hope this helps
Posted on Sep 09, 2009
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Posted on Jan 02, 2017
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