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

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.

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

RE: 2003 Silverado Fan Problrm
 

its the blower motor resistor its very very commen for those to go bad on any car

RE: 2003 Silverado Fan Problrm
 

Argon
Where is the resistor and connector?

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

RE: 2003 Silverado Fan Problrm
 

A buddy of mine's 06' burned to the ground because he didn't fix that melted plug.

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