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post #1 of (permalink) Old 06-10-2005, 04:01 PM
dpage
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a/c fan control speed switch

2001,Z71 a/c fan switch will only work on speeds 3, 4 , and 5.......no slow modes at all. Anyone know what could cause this to happen.

thank, dave
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post #2 of (permalink) Old 06-11-2005, 01:28 AM
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Re: a/c fan control speed switch

Sounds like what happened to me. The rheostat went bad, or in my case burnt up. I only had 4. It's behind your glove box. Your fan speed switch goes to the rheostat which tells the blower motor how fast to spin. Should be $20 or so at your local parts store. Hope this helps.
post #3 of (permalink) Old 06-14-2005, 09:19 PM
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Re: a/c fan control speed switch

Well I really don't want to sound stupid here....but is the rheostat the same as the blower switch.

thanks, dave
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post #4 of (permalink) Old 06-16-2005, 08:16 PM
98chevy
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Re: a/c fan control speed switch

Good question...I don't know. I would think it was, if I had to guess.
post #5 of (permalink) Old 06-16-2005, 09:15 PM
 
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Re: a/c fan control speed switch

Actually it is the doo-dad that varies the voltage for the different fan speed....the switch is just a switch.
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post #6 of (permalink) Old 06-20-2005, 06:29 AM
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Re: a/c fan control speed switch

Sounds like a electronic speed control
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post #7 of (permalink) Old 06-20-2005, 02:36 PM
 
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Re: a/c fan control speed switch

No it's a little plastic flange with a few different coils (resistors) of wire on it. It is attached to the air box behind the glovebox on the c/k trucks, not sure where on the 99+ trucks.

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