also where is it located?

 

Of the 4 wires in the connector you shorted to power. Two are grounds, one to chassis ground and the other internal GEM ground. The last one is the switch position sensor wire in the GEM. I would suspect that the GEM is now toast. There should be two dark blue wires in the connector. Check the resistance of both wires.

Regards

Jean Marc Chartier

 

It is attached to the other side of the fuse box in the cab.

Regards

Jean Marc Chartier

 

call me dumb but how do I check them?I have a ohm meter but not sure how to do it.

 

and is there a way I can take it out of 4l manually?kinda sucks not be able to go over 35mph

 

its wierd cause it all started when I changed to stock radio to a aftermarket,all I did was unplug the switch,unplug the radio and pull it out and plug the new one in.didnt do anything else except put the horn relay in it cause the guy I got it from removed the relay for the horn cause he said for some reason the factory alarm was going off and he couldnt get it to stop so he pulled the relay

 

Well if you are able to drive it in 4L and not bind the drive line I think I know what the original problem was.

To shift it back you will have to remove the shift motor on the back of the t-case and manually turn the gear to get it to go back into 2 Hi.

Regards

Jean Marc Chartier

 

[QUOTE=JMC;3628900]Well if you are able to drive it in 4L and not bind the drive line I think I know what the original problem was.

the gem?

 

I checked the selector switch and read good,,now the 2 dark blue wires was reading 0 with key off,on and running.does this mean the gem is bad?
I put both wires from the meter on the dark blue wires and tried switching the wires on the meter and still read 0.

 

The front axle most likely was not locking up.

Regards

Jean Marc Chartier

 

but is the gem bad or good?

 

Try this. lay the connector flat. There should only be one way it will lay flat. there should be 4 wires on the connector. The middle two are dark blue. Key OFF with the connector flat the bark blue wire to the left should be measured. Check the resistance to Ground. It should be greater than 10,000 ohms. if it isn't then there is an open somewhere. If it is OK turn the key to run and test the voltage. Ground the black wire of your meter and probe the connector with your meter.

Regards

Jean Marc Chartier

 

5.03 for volt with key of and on but nothing for ohm.

 

I have the same exact problem, light comes on and relays click 3 or 4 times but does not lock into 4wd. When I turn it back off the light will not go off until I turn the truck off and back on