GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 Montana SV6 Ext. 🢒 Preface 🢒 Cautions and Notices 🢒 Liftgate Wiring Harness Replacement

Removal Procedure
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Open the liftgate.
  3. Remove the liftgate trim panel. Refer to Liftgate Trim Panel Replacement .
  4. Remove the water deflector. Refer to Liftgate Water Deflector Replacement .
  5. Remove the rear speakers from the liftgate. Refer to Radio Rear Speaker Replacement in Entertainment.
  6. Remove the high mounted stop lamp. Refer to High Mount Stop Lamp Replacement in Lighting Systems.
  7. Remove the license plate lamps. Refer to Rear License Lamp Replacement in Lighting Systems.
  8. Lower the rear of the headliner to access the body harness to the liftgate harness electrical connector. Refer to Headlining Trim Panel Replacement .
  9. Disconnect the liftgate latch electrical connectors.
  10. Remove the rear washer hose. Refer to Rear Window Washer Nozzle Replacement in Wipers/Washer Systems.
  11. Remove the rear corner upper garnish moldings. Refer to Upper Rear Trim Finish Panel Replacement in Interior Trim.

    12. Object Number: 313629 Size: LH
  12. Disconnect liftgate wiring harness connectors (2) from the rear body wiring harness (3).

    13. Object Number: 1479964 Size: SH
  13. Disconnect the following electrical connectors and harness clips from the liftgate panel.
    14. • Harness retainer (1)
    • Wiper motor connector (2)
    • Harness retainer (3)
    • Harness clip (4)
    • Harness clips (5)
    • License plate lamp sockets (6)
    • Pink tape used for visual aid (7)
    • Harness clip (8)
    • Liftgate latch electrical connectors (9)
    • Green tape used for visual aid (10)
    • Harness clips (11)
    • Wiper motor harness clip to liftgate (12)
    • Speaker electrical connector (13)
    • Harness clip (15)
  14. Remove the electrical harness from the liftgate.

Installation Procedure
  1. Route and position the electrical harness to the liftgate.

    2. Object Number: 1479964 Size: SH
  2. Connect the following electrical connectors and harness clips to the liftgate.
    3. • Harness retainer (1)
    • Wiper motor connector (2)
    • Harness retainer (3)
    • Harness clip (4)
    • Harness clips (5)
    • License plate lamp sockets (6)
    • Pink tape used for visual aid (7)
    • Harness clip (8)
    • Liftgate latch electrical connectors (9)
    • Green tape used for visual aid (10)
    • Harness clips (11)
    • Wiper motor harness clip to liftgate (12)
    • Speaker electrical connector (13)
    • Harness clip (15)

    Object Number: 313629 Size: LH
  3. Connect liftgate wiring harness connectors (2) to the rear body wiring harness (3).
  4. Install the rear corner upper garnish moldings. Refer to Upper Rear Trim Finish Panel Replacement in Interior Trim.
  5. Install the rear washer hose. Refer to Rear Window Washer Nozzle Replacement in Wipers/Washer Systems.
  6. Connect the liftgate latch electrical connectors.
  7. Install the headliner that was lowered. Refer to Headlining Trim Panel Replacement .
  8. Install the license plate lamps. Refer to Rear License Lamp Replacement in Lighting Systems.
  9. Install the high mounted stop lamp. Refer to High Mount Stop Lamp Replacement in Lighting Systems.
  10. Install the rear speakers to the liftgate. Refer to Radio Rear Speaker Replacement in Entertainment.
  11. Install the water deflector. Refer to Liftgate Water Deflector Replacement .
  12. Install the liftgate trim panel. Refer to Liftgate Trim Panel Replacement .
  13. Close the liftgate.
  14. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  15. Re-initialize the power sliding door. Refer to Rear Side Door Actuator Control Module Programming and Setup .