Replacing GEM module does it need to be programmed

1999 FORD F-150

280,000 MILES • 6 CYL • 2WD • MANUAL

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I need to replace my GEM module and I am having problems getting an answer about whether the replacement has to be programmed if it is the same. My current one is xl34-14b205-ae / b /
Pick up 4x2.

Dec 2, 2018 at 8:01 PM

HARRY P

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Prodemand's information on the GEM module for your truck is contained in the attached images. The way I read it, the module must be programmed either way. AllData says the same thing.

Neither specifies exactly what happens if you do not have it programmed, so I would just err on the side of caution and get it properly done.

Images (Click to enlarge)

Dec 3, 2018 at 4:10 AM