One problem related to transmission solenoid has been reported for the 1998 Mitsubishi Galant. The most recently reported issues are listed below.
In June of 2002, auto transmission solenoid pack failed at 74,000 miles. Was replaced by authorized repair shop (not under warranty). Shop flushed transmission and found metal shavings in the fluid. Less than one month later (August 15, 2002) transmission failed completely at 78,000 miles. Transmission replaced completely at 78,000 miles. Dt.