GM Service Manual Online
For 1990-2009 cars only
  1. Loosen the striker to body fasteners.
  2. Move the striker up, down, right or left.
  3. Align the lift gate.
  4. Close the lift gate.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Open the lift gate and tighten the striker to body fasteners.
  7. Tighten
    Tighten the lift gate striker fasteners to 25 N·m (19 lb ft).