Heater fan only works on high number five setting

Tiny
FUG
  • MEMBER
  • 2003 CHEVROLET SILVERADO
V8 four wheel drive automatic 101,000 miles.

The heater fan only works in the high position. I have heat, but when I dial the setting knob to 1, 2, 3 or 4 there is no heat blowing through the vents. Where should I start to fix this issue?
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Wednesday, December 3rd, 2008 AT 12:39 AM

3 Replies

Tiny
RASMATAZ
  • MEMBER
Locate the blower motor resistor it controls the blower motor speed through resistances. The lower the number the slower the blower will blow.
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Wednesday, December 3rd, 2008 AT 12:42 AM
Tiny
FUG
  • MEMBER
What do I do when I find the resistor?
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Wednesday, December 3rd, 2008 AT 12:55 AM
Tiny
RASMATAZ
  • MEMBER
Replace it.


http://www.2carpros.com/forum/automotive_pictures/12900_blower_resistor_11.jpg

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Wednesday, December 3rd, 2008 AT 1:22 AM

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