J 42058 Frame Adapter Clamp

Caution: Refer to Approved Equipment for Collision Repair Caution in the Preface section.

1. Disable the SIR system. Refer to SIR Disabling and Enabling in SIR.
2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
3. Visually inspect and repair as much of the damage as possible to specifications using three-dimensional measuring procedures. Use J 42058 if pulling and straightening of the vehicle are required. Refer to Dimensions - Body and to Measurements - Underbody .

Important: Save any and all brackets, mounting studs, and accessories for transfer to the new rear compartment panel.

4. Remove all panels, components, and interior trim located in the rear compartment.
5. Remove both rear quarter panels.
6. Remove the rear surround from the rear compartment frame panel.

Important: Verify that the fuel inlet is sealed before proceeding with the repair procedure.

7. Drill out and remove 6 screws attaching the tub to the rails.




Important: The front edge of tub is also bonded across the seatback area and along the top of the rear impact bar. Detach the bonds and remove as necessary.

8. Apply heat to the inside of the tub along the bond lines, as indicated by the scribe lines on the floor of the tub.
9. Pry up on the tub at the adhesive joint until the tub bond breaks loose.
10. Remove the damaged rear compartment panel.
11. Remove all original adhesive using a suitable tool.
12. Scuff all bonding surfaces to ensure proper adhesion.
13. Clean and prepare all bonding surfaces prior to installing the sheet moulded compound (SMC) panel. Refer to Plastic Panels in Plastic Panel Information and Repair.

1. Temporarily install the tub. The panel must fit flush with the surface of the rails and the impact bar.

Important: Do NOT top-coat any bonding surface.

2. Prime all bare metal surfaces with an approved anti-corrosion primer. Refer to Basecoat/Clearcoat Paint Systems in Paint and Coating.



3. Apply structural adhesive GM P/N 89020330 (Canada P/N  8902332) 12 mm (½ in) diameter to the rail surface.
4. Apply the same structural adhesive to the backside of the lock pillars, as well as over the fuel filler neck.




Important: The rear compartment panel is positioned to the driver side rail assembly using two dimples located in the bottom surface of the tub.

5. Install the tub by aligning the frame locating pins.
6. Apply pressure to the entire tub to set the adhesive.

Important: Use fasteners no longer than 20 mm (¾ in) in length.

7. Install 6 close-end rivets GM P/N 9418420 or equivalent (1) in the areas indicated along the bond line. This will hold the tub to the rails while the adhesive cures.
8. Remove any excess adhesive.
9. Allow the adhesive to cure according to the adhesive manufacturer recommendations.
10. Install all related panels and components.
11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
12. Enable the SIR system. Refer to SIR Disabling and Enabling in SIR.