This 1997 Ford F150 needs the GEM module changed due to multiple conditions. To see testing that lead to this repair please click here. The GEM module is located at the rear of the interior fuse box.
The first step is to remove the trim panel that covers the gap between the upper side of the steering column and the dash. It just unsnaps from the dash. It makes it a little easier to remove if you move the shifter all the way down to drive 1.
With that out of the way the lower dash cover can now be removed. Most of the screws have 7 mm heads but there are two that have 8 mm heads.
Those two are at the lower edge of the fuse box.
One wiring harness needs to be disconnected from the panel.
Now the screws for the fuse box can be removed.
The wiring harnesses can be removed from the back of the fuse box. Two 10 mm headed bolts at the center of each connector.
Next remove the tube brace from around the bottom of the steering column. Four fasteners with 13 mm heads.
Now wiggle, pry and twist the fuse box and GEM module assembly down.
After the assembly is down far enough unplug the remaining harness connectors from the GEM module.
Almost there.
The assembly is now free of the vehicle.
The GEM module is held to the back of the fuse box by three phillips headed screws.
Easy to remove Now.
With the three screws removed the GEM unplugs from the back of the fuse box.
I put it all back together and checked my repair for power to the driver’s power window switch.
2000 F150, door locks wont work, when i push the button they barely move, odometer lights up when it wants, temperature gauge works when it wants, overhead compass used to work when it wanted but now not at all, cruise control quit working, and most importantly sometimes it wont start. I have to let off the key put the gas pedal to the floor and after 2 or 3 seconds it starts but idles around 2500rpms and I have to wait about 20 seconds for it to drop down and apply the brake and gas when putting in gear to keep it from dying. all problems seem linked
The blower issue could be GEM problem. The other two, probably not.
98 F150 with three electrical issues: ABS light on only when hot, parking brake dash light works sometimes, and most recently blower motor stays on with key out.
Could these all be related to the JEM module?
I would agree that the door jamb harness would be a good place to start.
wifleatI got one for you, on My 97 f150 2wd, My drivers door window motor runs only one diection-no matter which way you hit the switch(up 0r down), Also when you hit the switch, it also powers the pass side window motor and the little light on the door panel reflector blinks on and off. When we bought the truck it had a rigged up aftermarket alarm system-I have since cut all that out but it behaves very strangely. I have checked everything I know to check and haven’t come across anything. I’m getting ready to check the door jam harnesses.