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'99 F-350 electrical issues

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Old Jul 12, 2015 | 04:38 PM
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Cool '99 F-350 electrical issues

Hey, I'm having trouble with my '99 F-350 7.3L 4X4. One day, my power windows, cruise, dome light, horn, wipers, and 4 wheel drive stopped working. After checking all of the fuses, I have found no bad ones. I NEED HELP!!!
THANK YOU!!
 
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Old Jul 12, 2015 | 04:48 PM
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Possible bad gem module .
 
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Old Jul 12, 2015 | 05:27 PM
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I was hoping it was a single relay, or something!
 
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Old Jul 12, 2015 | 09:19 PM
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Hope is usually about as useless in troubleshooting as it is in picking a president...

The horn and the speed control do not utilize the GEM module, so their malfunction is due to something else.
 
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