My 95 4x4 has a problem with the o/d shifting. It shifts fine through 3rd gear, but when going into o/d the trans drops down a gear, then back up again. I will do this 2 or 3 times, then settle into o/d and leave the tach at 2000 rpm. Then while driving down a flat raod, the tach will jump to 2500 or so, and back down again. Sometimes it does this for a few miles, some times it shifts fine. After a long drive (4 hours) the trans does this weird shifting thing so much I tried turning off the o/d. Even with the o/d turned off, the shifting thing continued. When I tried using the cruise, the o/d light blinked twice with the o/d turned on, I tried it with the o/d off, the light again blinked twice. Today, it shifted better, but still jumped the tach a few times. HELP!!!!