One problem related to speed sensor has been reported for the 2003 Chevrolet Malibu. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Malibu based on all problems reported for the 2003 Malibu.
While driving 30 mph and without warning vehicle suddenly accelerated. Driver was able to maintain control of the vehicle, and drove it to the dealer for inspection. Mechanic replaced the speed sensor. Then, driver drove the vehicle from the dealer, and the problem still occurred.