MULTIPLE SEVERE TRANSMISSION ISSUES: 1. SUDDENLY DROPPING FROM 4TH TO 1ST GEAR, CAUSING SUDDEN DECREASE IN SPEED, SCREECHING OF TIRES, AND PASSENGERS IN VEHICLE TO BE THROWN FORWARD. 2. ERRATIC SPEEDOMETER. WHILE DRIVING AT HIGHWAY SPEEDS, SPEEDOMETER WILL DROP AND START TO JUMP BETWEEN APPROX 15 MPH AND 65 MPH; THIS IS FOLLOWED BY A VERY LARGE CLUNKING SOUND. 3. VEHICLE STAYS IN TOO HIGH GEAR. ENGINE AND TRANSMISSION RUN IN HIGHER GEAR THAN SHOULD BE; NOISE AND VIBRATIONS CAN BE HEARD/FELT IN VEHICLE. 4. TRANSMISSION WILL NOT ENGAGE AND SHIFT INTO PROPER GEAR FROM A STOPPED POSITION. ENGINE REVS HIGH, BUT TRUCK BARELY MOVES. THIS IS A MAJOR SAFETY ISSUE (1ST ISSUE NOTED). IT HAS BEEN IDENTIFIED BY MULTIPLE OTHER OWNERS THROUGH INTERNET SEARCHES. FORD IS AWARE OF THE ISSUE. THEIR STANDARD DIAGNOSTICS DO NOT PICK UP THE ISSUE, BUT WHEN THEY CONTACT ESCALATED SERVICE ENGINEERS FROM CORPORATE THEY TELL THE DEALER TO TRY A FEW OTHER TRICKS TO SEE IF IT IS WHAT THEY SUSPECT. THERE IS A KNOWN FLAW THAT THEY WILL NOT PUBLISH. THIS REPAIR IS SUPPOSEDLY THE WIRING HARNESS AND LEAD FRAME THAT NEEDS REPLACEMENT. HAVE HAD THE TRUCK INTO THE DEALER 7 TIMES FOR TRANSMISSION REPAIRS AND FINALLY AFTER THEM KEEPING THE TRUCK FOR 3 WEEKS THEY HAVE IDENTIFIED THE ISSUE. CUSTOMERS SERVICES SAYS THERE IS NOTHING THEY CAN DO TO HELP ME BUT THEY WILL MAKE NOTE OF THE CONCERN. THERE SHOULD BE A SAFETY RECALL ON THIS AND I'D BE HAPPY TO PROVIDE ANY MORE INFO YOU NEED. I HAVE SE