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.
You need to make sure there is no power to the respective fuses. If there is indeed no power to any of those fuses with the ignition on, the problem will be with either the ignition switch or the fusible links at the junction block under the hood.
I have a95 blazer and have no power too my radio my heater blower windows or wipers.ive checked the fuses and still nothing what could this be
The turn signal issue is not a GEM problem. Probably a faulty bulb or wire pulled loose at the rear of the turn signal switch. Tilting the column up or down with the turn signal on will usually find that though. The power window problem sounds more like a faulty switch or wiring.
Hey Sparky love the site. I have just picked up a 1998 F150XLT. Everything seems to work fine other than 2 things one is the right turn signal only works 1/3rd of the time the rest of the time it’s just a fast click. The other is the driver side power window won’t go down will I press the button but will randomly go down when driving on its own. I can hit the up button to make it go back up if a bit slow. Am I looking at replacing the GEM?
Which light specifically do you mean when you state dash light? Used parts are okay, assuming they are good. You can have some issues if there is a factory alarm system in your truck or the donor truck.