GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the upper seat trim. Refer to Sit-N-Lift Upper Trim Replacement .
  2. Remove the chain cover. Refer to Sit-N-Lift Chain Cover Replacement .

  3. Object Number: 1412317  Size: SH
  4. Remove the bolts from the limit switch bracket.
  5. Disconnect the electrical connector.

  6. Object Number: 1412321  Size: SH
  7. Remove the switch.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1412309  Size: SH
  1. Install an upper and lower stay bracket to the seat base. Secure the bracket with a bracket bolt and tighten to 50 N·m (35 lb ft) .

  2. Object Number: 1412321  Size: SH
  3. Install the limit switch and the bracket to the seat base.

  4. Object Number: 1412317  Size: SH
  5. Install the bolts to the limit switch bracket and tighten to 5.8 N·m (50 lb in) .
  6. Connect the electrical connector.
  7. Note: The switch body is delicate. Adjust and tighten the switch carefully.

  8. Set the limit switch to stop the lift in the proper location. Make the adjustment at the top hole on the slotted mounting bracket.

  9. Object Number: 1412319  Size: SH
  10. Tighten the mounting screws until the screws are snug, yet the switch can still be moved easily by hand.
  11. Operate the lift to the proper location. Slide the switch forward until the switch makes contact and clicks into place.
  12. Hand tighten the switch.

  13. Object Number: 1412323  Size: SH
  14. Adjust the lift stop position. The lift should stop when the left post makes contact with the rubber bushing, and the right post is 2-4 mm (0.04-0.08 in) from contacting the metal hook.
  15. Inspect the seat for proper installation.
  16. Install the chain cover. Refer to Sit-N-Lift Chain Cover Replacement .
  17. Install the upper seat trim. Refer to Sit-N-Lift Upper Trim Replacement .