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.
It could be the GEM. The fuse box is normally only an issue if there is corrosion, signs of water or burnt terminals. Which light is staying on? You mentioned dash lights early on and then switched to just calling it a light. Were you still having a cranking issue up until the dealership pulled a fuse?
You have an awesome post!! It is a wealth of help.
My truck was trying to start by itself with no key. The power windows, odometer, side pwr mirrors won’t work, battery drains, dash light stays on after key is out. Had Towed to a local garage – they replaced the starter, battery & cable. It would start but the lights would stay on again couldn’t get them to go off. They replaced the ignition and the light still was on. Told me to take it to the dealer. The dealer said its the GEM Module. To get it started they pulled 1 of the fuses under dash. But the light stays on still. We have followed the pictures and instructions to take the GEM Module out! Paused to email you for advice. Does it sound like the GEM Module or Fuse box or both? What are your thoughts? Thank you…
Hi Brenda,
On your 1999 Taurus, I looked over some wiring diagrams and your list of complaints are not related to a GEM fault. Treat them as separate issues and fix them one at a time.
From my experience, over the years, you will need a better grade of scan tool that can access all modules and clear all codes in the vehicle. Do not use anything to seal the GEM. It has to have air circulation to keep it cool. You should also inspect the fuse box and harness connectors for water damage
hi sparky.a friend of mine told me about your site.i just cant figure out where to post this.i have a 98 expedition 4×4 5.4 eddie bauer w/98k power everything with stock anti theft. i too have the water intrusion issue and literally had smoke coming out of the gem. along with flashing dash lights. i will be replacing the gem along with fixing the leak… my questions are if i were to get a used gem that matches my model and there were codes on it would i be able to clear them with a obd II scan tool myself? or should i bite the bullet and buy a new one ..and i noticed in a previous post you stated the gem & anti theft system have relation .is this true for my model?..will a new or used gem effect my anti theft?..to go overboard i was thinking about using a product called “Plasti-Dip Multipurpose Rubber Coating“to coat inside and outside of gem module before installation it comes in a spray can in clear coat rubber…should I NOT do this?……..also I have a flashing airbag light code 53 i think it means there is a short somewhere.i checked all fuses. Could it be the gem? thanks