Well for starters, the trans is braindead. the only input from the computer would be for the lock up converter. that's an old school 700r4. Still shifts from the TV cable, and a possible modulator. (can't ever remember if the 700r4 needs a vacuum source). I'd say make sure the cable is adjusted properly. AT WOT, the cable should be pulled tought. Modulator if equipped should be swapped. Probably the start of a tranny rebuild though.