Question about Cars & Trucks
When I change the control from defrost to any other position like vent or floor nothing happens
Posted on Jan 21, 2013
Check the vacuum lines under the hood for emissions and ac controls for broken or leaking hoses
Posted on Jan 21, 2013
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Posted on Jan 02, 2017
These trucks have a problem where moisture builds up in the heater box then freezes. When this freezes and you change your heater settings it breaks the shaft for the blend door. If this is what happened you should be able to look under the dash above and to the right of the gas pedal and you will see two vaccuum accuators one of them you should be able to wiggle around the linkage if it is broke. To fix this you need to remove the entire dash to get the heater box out which involves discharging the AC and draining the coolant because the heater core and evaporator come out. Please rate.
Posted on Dec 13, 2008
There is a actuator on the right side of your leg while sitting in the drivers seat under the dash. It has a plastic rod for actuation manually actuate this diverter and should be the problem.
Posted on Oct 14, 2009
Your heating and air conditioning system is controlled by the Body Control Module (BCM). Any diagnosis should begin with scanning the (BCM) for trouble codes to determine the source of the problem and/or which circuits and components are involved.
If a failed mode door actuator is, in fact the problem, the instrument panel must be removed to gain access to it.
Posted on Oct 17, 2009
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