GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the rear wiper arm. Refer to Rear Window Wiper Arm Replacement .

  2. Object Number: 821861  Size: SH
  3. Remove the nut (1) and the wiper packing (2).
  4. Open the liftgate glass (8).
  5. Remove the wiper motor cover (7) using a flat-bladed tool.
  6. Disconnect the 2 rear defogger electrical connectors (3).
  7. Remove the 2 nuts (6) from the wiper motor assembly (5).
  8. Remove the rear wiper motor (5) from the liftgate glass (8).

  9. Object Number: 821863  Size: SH
  10. Disconnect the junction switch electrical connector (6).
  11. Remove the junction switch nut (4) and the junction switch (5).
  12. Remove the  3 screws (3) that hold the rear wiper shaft cover (1) to the wiper motor assembly (2).
  13. Remove the rear wiper shaft cover (1) from the wiper motor assembly (2).

Installation Procedure


    Object Number: 821863  Size: SH
  1. Position the rear wiper shaft cover (1) to the wiper motor assembly (2).
  2. Install the 3 screws (3) to the wiper shaft cover (1).
  3. Position the junction switch (5) to the wiper motor assembly (2) and install the nut (4).
  4. Reconnect the junction switch electrical connector (6).

  5. Object Number: 821861  Size: SH
  6. Position the wiper motor assembly (5) to the liftgate glass (8).
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Install the 2 nuts (6) to the wiper motor assembly (5).
  9. Tighten
    Tighten the nuts to 5.5 N·m (49 lb in).

  10. Reconnect the 2 rear defogger electrical connectors (3).
  11. Install the wiper motor cover (7).
  12. Close the liftgate glass (8).
  13. Install the wiper packing (2).
  14. Install the wiper packing nut (1).
  15. Tighten
    Tighten the nut to 7.0 N·m (62 lb in).

  16. Install the rear wiper arm. Refer to Rear Window Wiper Arm Replacement .