CHEVY BLOWER RESISTOR

1996 Chevrolet Silverado

Tiny

Cromika1965

June, 22, 2008 AT 1:42 PM

Air Conditioning problem
1996 Chevy Silverado V8 Two Wheel Drive Automatic 123000 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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5 Answers

Tiny

blackop555

June, 22, 2008 AT 1:50 PM

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.

Tiny

Docfixit

June, 22, 2008 AT 1:51 PM

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

Tiny

blackop555

June, 22, 2008 AT 4:04 PM

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

Tiny

Cromika1965

June, 24, 2008 AT 7:10 PM

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!

Tiny

blackop555

June, 25, 2008 AT 7:16 PM

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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