chances its not the motor but the wiper module board located on the wiper motor. just remove the wiper motor and the module board is connected to it.
remove wipers using small puller, remove plastic shield at bottom of the windshield. remove two 10mm bolts holding wiper assembly to chasis. Wiper pulse module is attached to (under) the wiper motor
Its attached to the windshield wiper motor you will have to remove the cowl to get access to it.
It is inside of the wiper motor. Remove the 2 or 3 screews that's on the black cover that's on the front of the wiper motor and unplug the electrical connector. Remove the cover and then pull the module board out. Real easy no problem.
It is likely the Wiper Control module mounted to the wiper motor. I had this problem on my CTS and since found out other CTSs have also had the problem.
Remove the wiper arm from the wiper motor. Remove the wiring harness from the wiper motor. Remove the wiper motor retaining bolts. Reverse the process to install the new wiper motor.
mounted to the bottom of the wiper motor
Remove the wiring harness from the wiper motor. Remove the windshield wiper arm from the wiper motor. Remove the wiper motor retaining screws. Reverse the process to install the new wiper motor.
The wiper control module is located inside the wiper motor assembly.
Remove the wiper arm from the wiper motor. Remove the wiring harness. Remove the wiper motor retaining bolts. Reverse the process to install the new wiper motor.
Remove the rear wiper arm from the wiper motor. Remove the wiring harness from the wiper motor. Remove the wiper motor retaining bolts. Reverse the process to install the new wiper motor.
# Remove the windshield wiper arms # Remove the cowl cover # Disconnect the electrical connector from the wiper motor # Detach the wiper motor/linkage assembly from the cowl # Remove the wiper motor retaining bolts and remove the motor