One problem related to brake antilock wheel speed sensor has been reported for the 2001 Mitsubishi Galant. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Mitsubishi Galant based on all problems reported for the 2001 Galant.
Car shimmies when applying the brakes. The speed sensor (I think) was replaced once, new brake pads were installed. The rotors were not checked or replaced.