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August 1, 1999 Service bulletin

Some vehicles with automatic 4 wheel drive (A4WD) may exhibit multiple generic electronic module (GEM)...

Ford technical service bulletin 13091 for 1999 Ford Explorer and 1999 Mercury Mountaineer.

Bulletin number
13091
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
Some vehicles with automatic 4 wheel drive (a4wd) may exhibit multiple generic electronic module (gem) functional concerns (I.e., inoperative one touch down, chime, 4x4 shift motor, etc.). Tt

Owners of these vehicles have filed 123 complaints in the transmission category.

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