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What is a Generic Electronic Module?

The Generic Electronic Module (GEM) is found on Ford vehicles and is basically a Body Control Computer. It controls many of the following functions on most Ford vehicles:

  • Warning chimes and warning lamps
  • One-touch down driver's side window
  • Daytime Running Lamps
  • Heated rear window
  • Windshield washers and wipers
  • Battery saver
  • Remote keyless entry
  • Illuminated entry with remote keyless entry
  • Interior lighting
  • Perimeter anti-theft
  • Four-wheel drive

The GEM is bolted to the back of the fuse box.

Sometimes though the fuse box gets water in it and causes the same problems too.

I have seen alot of trucks have the Gem mod short due to water intrusion from seal of windshield. So if you determine it's faulty and you might have found water or mosture in it run blast the windshield and area around the wiper arms and check for leaks.

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What is a Ford Gem Module?

The Gem Module is a relay that control the majority of the electrical functions in late model ford vehicles


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