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James, Ford Technician
Category: Ford
Satisfied Customers: 3628
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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I have a f250 1999 superduty with the 7.3 my overdrive light

Customer Question

I have a f250 1999 superduty with the 7.3 my overdrive light is blinking and my horn goes off unless my door is open
Submitted: 2 years ago.
Category: Ford
Customer: replied 2 years ago.
my speedomedor is not working as well started last night n a very hard rain
Expert:  James replied 2 years ago.
This is most likely from moisture under the dash. If the gem module for wet and corroded this can be causing all your issues. I would lower down the interior fuse panel. The gem module is mounted right on top of the fuse panel. Inspect this area for any moisture or green corrosion. If you can let me know we can proceed.
Expert:  James replied 2 years ago.
How are you. I just wanted to see if I am still able to offer you assistance?