How do you change the gem module in a ford f150

try this link

copy and paste

https://carphrases.com/bad-ford-gem-module-symptoms/

Cassidy, Links below to GEM.
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The fuse panel under the dash, and the GEM module are one in the same.

Use Google & You Tube Video-- to see where it is
& how to change it

How do you know it needs to be changed?
What sort of testing told you that?

You have to get the exact one at a salvage yard
& the part numbers have to match up, or you will
have to pay big bucks for a dealer to reflash the factory
as built, plus updates into the next one

Ford is the only manufacturer in the world,
to ever call a BCM a Gem Module,
& only for about ten years or less.

Now the PCM has all the functions in many of their
products

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 t 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.

Central Junction Box / cab fuse panel Fuse 15 ( 5A ) feeds the GEM Module

A leaking windshield ( lower left hand corner ) can cause water to get on the back of the CJB, and corrode the pins to the GEM.

check to see if you have corrosion in the fuse box or the GEM module, by removing the fuse box completely, disconnect the battery, take out the two screws and two 8mm bolts that hold the fuse box in, it will take some maneuvering to get it positioned right to disconnect the two wiring harnesses from the fuse box, they are bolted through the middle. Once removed, take the GEM module off the back of the fuse box and look for what would be something like the same corrosion you would see on your battery posts, usually one of these components is corroded and causing the problem, my buddy got a replacement fuse box for his from a wrecking yard for only 15 dollars, with all the fuses and relays. If you have this corrosion, then you probably have a windshield leak at the lower left hand corner of the windshield, it lets water drip onto the fuse box and GEM module. Hope this helps, let me know

It could be the GEM, Generic Electronic Module IF
you have a speed dependant interval wiper whre the interval changes as speed changes and
your "One touch" down driver window feature does not work. If passenger window does not work, it is not GEM. Is lockout switch on driver door off?

go to car-part.com for used part. look on page with asterisk for lowest price.
new - tascafordparts.com

wiper


power window

try a salvage yard that has an expedition or an f150 pickup and take the parts off and install in yours disconnect the negative side of the battery and you shouldn't have to have it reprogrammed

For starters, do you have brake lamps? The shift lockout is controlled by the brake switch. As far as the others, yes it could be the GEM (generic electronic module) some of these vehicles have water intrusion problems that leat into the fusebox and GEM which is located on the back of the fuse box. If you can look at the fuse box inside the vehicle and if you can see the back, look for corrosion which is a sign of water.