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2003 Silverado Fan Problrm

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  #1  
Old 11-24-2007, 07:55 PM
tomzx79's Avatar
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Default 2003 Silverado Fan Problrm

My heater fan only works on speed 3 and up. It will not work on lower speed. Has anyone had this problem?

Thanks,
Tom
 
  #2  
Old 11-24-2007, 10:02 PM
Join Date: Aug 2007
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Default RE: 2003 Silverado Fan Problrm

I had a problem similar to this on my 95 Z ended up replacing the fan motor and something else. I cant remember what it was called and it was hard to get to. It had something to do with temprature sensing and it was under the dasn near the fan mounted in the "duct work" of the a/c/heater.
 
  #3  
Old 11-25-2007, 05:19 AM
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Default RE: 2003 Silverado Fan Problrm

its the a/c resistor MOST LIKELY....but could be the switch...

if the resistor plug is melted,you'll need a resistor and a connector
 
  #4  
Old 11-25-2007, 10:19 AM
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Default RE: 2003 Silverado Fan Problrm

its the blower motor resistor its very very commen for those to go bad on any car
 
  #5  
Old 11-26-2007, 09:45 AM
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Default RE: 2003 Silverado Fan Problrm

Argon
Where is the resistor and connector?
 
  #6  
Old 11-26-2007, 06:04 PM
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Default RE: 2003 Silverado Fan Problrm

on the right floorboard....loadred trucks have a panel that hides the a/c box...cheaper truicks do not..

look uynder there...you'll see the round fan motor...left of that is the resistor,with a big plug with about 7 colored wires....unplug that and see if the end is melted
 
  #7  
Old 11-26-2007, 06:42 PM
Join Date: Dec 2006
Location: Tennessee
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Default RE: 2003 Silverado Fan Problrm

A buddy of mine's 06' burned to the ground because he didn't fix that melted plug.
 
  #8  
Old 11-27-2007, 08:39 AM
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Default RE: 2003 Silverado Fan Problrm

Thanx Argon
I'm on a road trip in the Smokies.. will check it out..
when I get home & let ya know how it turns out
 
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