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Old 08-21-2013, 01:52 PM
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Join Date: Apr 2010
Location: Macomb, Illinois
Age: 52
Posts: 675
Gender: Male
Vehicle: 2004 Quad Cab diesel
Trim Level: SLT
Color: Silver
Engine: 2005-20?? 359ci (5.9L) Cummins ISB 610 24-Valve Diesel I6 325hp 610 lb/ft
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I don't think its the FOB since it doesn't sound like the work with the lock or unlock button on the doors either.

You have the same year truck as mine and they have been known to have this kind of problem. Here is a link to a forum that may have more answers. It won't let me post a link but it the cunninsforum.

A couple of other thoughts. Try running a hot wire to one of the lock buttons or the actuator itself. If this makes it work, it might be a broken wire somewhere. Breaks in the door jamb wiring could be hard to find. To do this I often used a spare battery and some jumper wires, or some jumper cables and some jumper wires. In other words wire up the switch or a door actuator directly to the hot side of a 12v battery.

Also I'm not sure what the computer in the truck controls. I'm not even sure what its called, the ECU. It will control certain things but I'm not sure what.

Good luck and you did well with your english.
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2004 3/4 ton Quad Cab, 24 valve 5.9 Cummins
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