Question about Cars & Trucks
At an educated guess I would blame a blockage in your heater hose to or from the front heater element. first remove both heater hoses that go to the heater element, then attach a garden hose on one end and turn it on, when the water is clear remove the garden hose and put it on the other hose so the water flows in the other direction, when doing this be careful you don't use too much pressure because it is only designed for about 16psi
Posted on Nov 27, 2013
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Posted on Jan 02, 2017
Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.
Posted on Jan 18, 2009
common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.
Posted on Feb 23, 2009
SOURCE: ac blowing hot air
the blend door actuator located on the air box (right hand side under dash) is prob. inop. worst case senerio the blend door its self is broken. I have replaced the actuator more than anything.
Posted on Sep 16, 2009
SOURCE: 2005 tahoe no air blowing
as long as all the fuses are good.. its probably the blower resistor/module... located next to the blower motor under the pass. side of the dash..
Posted on Oct 13, 2009
There is a actuator motor that controls this,and it is not working,unfortunately ,the whole dash has to be removed to replace the actuator motor.If this was at all helpful,please rate,thank you.
Posted on Jul 07, 2010
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