97 f150 4wd problem. please help

[jmc29]

1997 f150 electronic 4wd not working, lights on dash not working(they light up on start up) replaced tranfser case motor still not working, checked all fuses, Do not feel or hear clicks on vacuum solenoid, Top vacuum lines on both have vacuum. Where do i go from here? what do i check next, Thanks in advance for any and all replies.

 

[jmc29]

This was posted on another website.





"Common Symptoms of a bad GEM Module.

Windshield wipers work only sometimes or not at all.
Dome lights stay on all the time, work sporadically or not at all.
For 4X4 Models with ESOF, Your 4 Wheel drive does not work at all, or stays in 4 wheel drive.
Your Windows quit working all together or roll up and down all by themselves for no reason.
Dash lights quit working.
Radio stops working."
My power windows do that sometimes

My dome light does that also

my 4wd is not working,

I am gonna pull the gem tomorrow

 

[arco777]

The GEM is a major weak point on these generations of F-150s and Expeditions. Often a leaky windshield seal causes water damage to the GEM itself.

On my Expedition I had random electrical issues as a result of this and any day that it was rainy or even just humid it would act up.