1996 Chevy Silverado blower resistor

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?

Sunday, June 22nd, 2008 AT 1:42 PM

5 Replies

BLACKOP555

MECHANIC
10,371 POSTS

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

DOCFIXIT

MECHANIC
18,828 POSTS

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

BLACKOP555

MECHANIC
10,371 POSTS

There you have it, two identicle answers. That confirms the validity.

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Sunday, June 22nd, 2008 AT 4:04 PM

CROMIKA1965

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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

BLACKOP555

MECHANIC
10,371 POSTS

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.