I have a 1998 Mitsubishi 3000 GT with automatic transmission. It started having shift shock where it would all of a sudden shift hard and lurch. Got the transmission rebuilt and new solonoid. That did not solve it. Got new rotor and distributor cap, new coil, new computer circuit board last week. Now it won't upshift and check engine light came on (again). Every time the check engine light comes on it codes up for tranny problems. But I had the tranny rebuilt. Cannot go above 30 miles per hour because it won't shift. My mechanic gave up. I spent a ton of money to get it fixed and I still can't drive it. Any suggestions?