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A/c- heater issues

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Old April 15th, 2009, 8:01 AM
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Default A/c- heater issues

My 2003 Trailblazer, is blowing heated air from the upper vents only, it will not switch to the floor vents.
Now when running the A/C the fan will not shut off even after turning the engine off and removing the key.
Also A/C suddenly will not blow cooled air.
I replaced an actuator door control about a year ago.
Old October 14th, 2013, 12:46 PM
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My heater is blowing cold air and I have been told that my blend door actuator is not allowing heat to come in to the cab.How do I replace it a
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