1996 Chevy Silverado blower resistor

Tiny
CROMIKA1965
  • MEMBER
  • 1996 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 123,000 MILES
My a/c -heater fan only runs on high speed. The other 3 speeds do not work. I have a chilton manual and the wiring diagram suggests it is the blower resistor. Where is that located on the truck and do you think that is what the problem is?
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Sunday, June 22nd, 2008 AT 1:42 PM

5 Replies

Tiny
BLACKOP555
  • EXPERT
Sounds liek a blower motor resistor to me. Only letting the high currents through.

Try behind the glovebox.

If not there ask me to look for a diagram.
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Sunday, June 22nd, 2008 AT 1:50 PM
Tiny
DOCFIXIT
  • EXPERT
Classic description of a bad blower resistor.
It will be located in the plenum down stream of the blower should gain access behind glove box
Good luck
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Sunday, June 22nd, 2008 AT 1:51 PM
Tiny
BLACKOP555
  • EXPERT
There you have it, two identicle answers. That confirms the validity.
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Sunday, June 22nd, 2008 AT 4:04 PM
Tiny
CROMIKA1965
  • MEMBER
I have replaced the resistor and when you turn the fan on the 3 lower speeds, it blows the fuse. If you run the fan on high speed, it runs fine! Any ideas about what to do next? Sorry about e-mailing you blacktop 555, I didnt read far enough down!
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Tuesday, June 24th, 2008 AT 7:10 PM
Tiny
BLACKOP555
  • EXPERT
Its ok if you email me.

I jsut like it on here because it keeps all the information together and easy to access!

I would check for damaged wires first in the harness to the blower motor. From there I would suspect possible bad blower motor, using too much resistance causing too much amps to be pulled blowing hte fuse.
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Wednesday, June 25th, 2008 AT 7:16 PM

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