Question about 2007 GMC Sierra 1500
Posted by Anonymous on
Might be the condincer, does the comprsure kick when you turn the air on. if so you might want to take it to a shop and have them flush the lines out. old as it is it should be done, another thing to check would be the temp snsor for the a/c.
Posted on Aug 16, 2009
you need to change drivers side temp door actuator then disconnect battery for 5 seconds and reconnect after changing the part, turn key on for 60 seconds with touching heater control to allow actuator to program and then it will work.
Posted on Sep 19, 2009
their is a heat shutoff valve located under the hood on the passenger side check the vac. lines at the valve
Posted on Sep 04, 2012
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