One of the windows is not working on my kj. Its the drivers side rear. It doesn't work from either the front or rear switch so I am thinking motor problems? Any one know of a good way to trouble shoot this problem?

Does it make grinding sounds when trying to go down or up? My friend Chevy had an issue similar and it ended up being some mud that had dried on the window preventing it from going down for some reason...but most likely a motor issue that you can probably get teh door panel off and try to tinker with...

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Had 2005 KJ Rocky Mnt. Edition (destroyed)
Had 2006 KJ Sport 4x4
Have 2007 JK 4-dr Sahara 4x4 (tow package so stock 4.10s!!)
AEV 3.5" RS Lift; Schrockworks FR bumper and Warn 9.5ti winch; Cobra 75 CB; Rigid 50" LED light bar; Adventure Trailers (AT Overland) JK Kitchen setup in the cargo area.
Southern L.O.S.T. # 236487

No noise it is completely dead. It was working fine a couple of days ago so I am thinking motor or loose connection.