GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Savana 🢒 Body and Accessories 🢒 Collision Repair 🢒 Rear Floor Replacement

Removal Procedure

    Important: The floor rear extension panel is serviced as a single component (1). The reinforcement structure for the floor panel is a separate part (2) and can only be serviced separately. In most, cases, this reinforcement will need to be replaced in the event the floor panel extension is to be replaced.


    Object Number: 367750 Size: SH
  1. Remove all related panels and components, including jack stowaway mount in right rear corner of vehicle.
  2. Visually inspect and restore as much of the damage as possible to factory specifications.
  3. Remove the following as necessary:
    4. • Sealers
    • Sound deadeners
    • Anti-corrosion materials

       Important: The rear corners of the original panel (3) must be cut to remove the panel from the vehicle.

  4. Locate, mark, and drill out factory welds necessary to remove the extension panel.

    5. Important: If a rear door hinge pillar inner reinforcement is to be replaced it is not necessary to perform step 5.


    Object Number: 367753 Size: SH
  5. Loosen all body to frame mount bolts, remove all but two in the radiator core support and the two front body bolts.
  6. Lift body off the frame, place 4x4 wood blocks (1) to support the body.

    7. Object Number: 367761 Size: SH
  7. Locate, mark, and drill out welds to remove the body mount anchor plates (1) and the floor panel reinforcement.
  8. Remove the foam air baffles (2) from the right and left floor extensions, these need to be reinstalled during assembly.

Installation Procedure

    Object Number: 367764 Size: SH
  1. Drill holes for plug welding as necessary to install the service panels.
  2. Clean and prepare all mating surfaces as necessary.
  3. Locate reinforcement and body anchor panels. Use three-dimensional measuring equipment.
  4. Plug weld as necessary.
  5. Cut and bend each side of the floor panel extension (1).
  6. Place the front edge of the extension (2) panel in position.
  7. Bring the rear of the service part into place and straighten the bent tabs.
  8. Check for proper fit and alignment.
  9. Weld accordingly, including cuts made for installation.
  10. Lower body to frame and reattach body to frame mounts, torque bolts to 85 N·m (63 lbs ft).
  11. Clean and prepare welded surfaces.
  12. Prime with two-part catalyzed primer.

    13. Object Number: 367779 Size: SH
  13. Drill appropriate size holes to install two-part expanding foam in the floor extension (1).
  14. Seal holes with a suitable plug (1).
  15. Apply sealers and anti-corrosion materials as necessary.

    16. Important: Do not combine paint systems. Refer to manufacturers recommendations.

  16. Install all related panels and components.