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.
The GEM could be involved but my first suspicion would be a faulty ignition switch. Try wiggling the key cylinder while the engine is running. Check the power window operation while doing this. Be careful not to engage the starter while wiggling the key cylinder.
My 97 f150 is having window problems, with the key in acc. and on position the windows work fine. When the engine is running they won’t work. Could this be because of a bad gem
It could be but the first thing that should be checked is the accessory delay relay. It needs to checked to see if it is stuck or if something in the GEM system is keeping it energized.
I have a 97 expedition. The problem is that the windows and mirrors work with the ignition off and door open. Also the oil pressure gauge reads high, the temperature gauge runs hot and the battery voltage reads zero. Is the a gem module problem?
The headlight issues are likely not related to the GEM. The others could be but be sure to test. As far as the interchange, I would recommend checking with the dealers parts department or a parts store/supplier.