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Home >> Ford >> 2000 >> Excursion 7.3 F, 4WD >> Repair and Diagnosis (Single Page) >> Transmission >> Transfer Case >> Four-Wheel Drive Systems (ESOF) - Excursion & F250-F550 Super Duty >> Trouble Shooting >> Symptom Diagnosis >> No Communication With GEM

No Communication With GEM

Possible cause: Fuse(s), fuse panel, wiring and/or GEM. Perform TEST F  under DIAGNOSTIC TESTS.