I have a 1995.5 Izuzu Rodeo with transmittion and exhaust problems. The transmittion light blinks, but it's not slipping gears, it just doesn't want to move. The best way I can describe it is that it's like driving in neutral. The reverse works fine.   I have had the transmittion flushed and filters replaced. A full tune up and oil change has also been done recently. About how much would it cost to fix this problem.