we have a 2000 explorer xlt,was towed 55 or so miles /w rear wheels on ground. has had trans rebuilt as consequense. now 2 years later when under load will buck and can be felt in steering, no codes. removed front shaft now problem gone but no 4x4 and winter is close!you guys arere my last resort! HELP! GEM module??? thanx dave griffin has new plugs.wires and coil pack!

 

Sounds like it fried the transfer case as well.