GM 88958223 Motor Asm,Windshield Wiper

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To troubleshoot wiper issues, start by checking the battery's condition and charge. If the battery is fine, manually operate the wiper arms after removing the wiper motor to check for any binding in the linkage or pivots. Lubricate or repair as needed and reinstall the motor. If the wipers still move slowly, inspect for loose or corroded connections, particularly the ground connection. If all connections appear fine, consider replacing the motor. In case the wipers fail to work when activated, check the fuse and repair the ground connection if necessary. If the motor still doesn't function, test for voltage at the motor in the HI position. If voltage is present, remove the motor and test it separately. If it works, check for binding linkage, and if it still doesn't work, replace the motor. If there's no voltage, examine the wiper control relays. If voltage is present at the relays but not at the motor, have the switch tested. If the switch is fine, the wiper control relay may be faulty. For an inoperative interval function, check the continuity of the wiring between the switch and wiper control module. If the wipers fail to park, check for voltage at the park feed wire of the motor connector when the switch is off but the ignition is on. If no voltage is present, inspect for an open circuit between the motor and fuse panel. To remove the wiper motor, disconnect the negative battery cable, remove the wiper arm nuts, and mark the positions of the arms before removing them. Take off the cowl grille and disconnect the electrical connector at the motor. Remove the motor/linkage mounting bolts and separate the assembly, then unbolt the motor from the linkage. Some rocking motion may be necessary to free the wiper drive from the cowl. Installation is the reverse of removal.

The continuity of the wiring between the switch and wiper control module.