2005 gmc 2500hd heater motor blower resistor or whole thing?

2005 GMC SIERRA
73,000 MILES • V8 • 4WD • AUTOMATIC
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JGUESS22
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I have a gmc 2005 2500hd truck. It still blows hot and cold air but there has been a slight ticking noise comming from under the passenger side where the feet go. How to know if i need to replace resistor or the whole blower>
Dec 28, 2010 at 9:36 PM
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JACOBANDNICKOLAS
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If the blower motor works on all speeds, the resister is fine. As far as the ticking, that could be a vent door sticking. Usually when the motor goes bad, they make a screaching noise and then stop running. See if you can locate where the noise is coming from. Check the vent door actuators under the dash.
Mar 8, 2011 at 7:36 PM