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2004 Chevy express 3500: wont turn..the turn signal multi..wiper motor

Resolved Question:

I have a 2004 Chevy express 3500 the windsheild wiper wont turn off and the delay is not working, they run all the time it this more apt to be the turn signal multi switch or the switch in the wiper motor itself?
Submitted: 6 years ago.
Category: Chevy
Expert:  Carhelp4u replied 6 years ago.

This has been a common failure on this model. Such a problem that gm has released a bulletin about this problem. The failure lies within the wiper motor control module. This module controls all of the speeds of the motor. When the module fails it causes for the wipers to run all the time. The gm bulletin number is XXXXX You may want to contact your local gm dealer and get a new module pt #88958136. This should cure your poblem. Feel free to contact me with any questions! Good luck! Oh, here is what you will need to do to access the module.

Object Number: 497988  Size: SH

  1. Set the wipers in the Park position.
  2. Disconnect the washer hose elbow from the air inlet grille panel.
  3. Remove the cover from the nut on the wiper arm.
  4. Remove the nut from the wiper arm.
  5. Rock the wiper arm back and forth to loosen arm from the drive shaft.
  6. Remove the wiper arm from the drive shaft.Object Number: 885336  Size: SH

  7. Remove the screws (1-7), retaining the air inlet grille panels to the cowl vent.
  8. Disconnect the washer hoses from the air inlet grille panel.
  9. Remove the air inlet grille panels from the vehicle.Object Number: 781418  Size: SH

  10. Remove the 3 screws (2) and the wiper motor cover (3) from the wiper motor (1).
  11. Remove the wiper motor cover (3).
    Object Number: 497995  Size: SH

  12. Install the wiper motor cover onto the wiper motor with the 3 screws.

    Tighten the screws to 3 N·m (26 lb in).

    Object Number: 497992  Size: SH

  13. Connect the electrical connector to the wiper motor.
  14. Install the air inlet grille panel.
  15. Install the wiper arms.
  16. Operate the wipers and inspect for proper operation.
Category: Chevy
Satisfied Customers: 5203
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