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Trucks, Trailers and Hauling for Shows

GMC 1500 P/U Fan Switch


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Old 05-09-2014, 04:54:17 PM
John Newman, Jr.'s Avatar
John Newman, Jr. John Newman, Jr. is offline
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Default GMC 1500 P/U Fan Switch

I have a '95 GMC 1500 pick-up. The cab heater / A.C. fan only works on "High". What would cause this? Is there some kind of resistor block that regulates the lower speeds? Are they known to fail? Where is it located? Should be able to tell if it has burned out if I can find it. I have pulled the plug off the back of the switch and reattached it hoping it was just a dirty connection, but that did not help.
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Old 05-09-2014, 06:22:03 PM
JHoward JHoward is offline
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Default Re: GMC 1500 P/U Fan Switch

On the earlier Chevy models there was a couple of small wire wound resistors on the backside of where the plug attached (inside the heater box assembly).

Jhoward.
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Old 05-09-2014, 06:55:32 PM
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Default Re: GMC 1500 P/U Fan Switch

The "High" setting is on a separate circuit from the others. Have you checked your fuses? (Dumb question, I know.)
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Old 05-09-2014, 08:46:26 PM
Jake Jacobs Jake Jacobs is offline
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Default Re: GMC 1500 P/U Fan Switch

This what you need to know. http://www.youtube.com/watch?v=gj4hw-HR3n4
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