Code 63 - Cruise System Problem (3.8L Except "E" Body): Notes

The PCM-controlled cruise control system is designed to monitor itself to ensure the desired cruise position and actual cruise position are equal to each other. If actual servo position is too low when maximum servo position is commanded, Code 63 will set. Code will set if throttle angle is less than 50 percent, desired servo position is 90 percent, actual servo position is less than 2 percent and all conditions have been met for at least 3 seconds. Code 63 will not turn on the SERVICE ENGINE SOON light.