How do you replace the gem module in a sport trac?

To replace the GEM (Generic Electronic Module) in a Ford Sport Trac, first disconnect the vehicle's battery to ensure safety. Locate the GEM, typically found under the dashboard or behind the fuse panel, and remove any necessary panels to access it. Disconnect the wiring harness from the GEM and unbolt it from its mounting location. Install the new GEM by reversing the process, reconnecting the wiring, securing it in place, and finally reconnecting the battery.