J 42058 Frame Adapter Clamp

1. Visually inspect and restore 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.

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

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

Important: Make sure the fuel inlet is sealed before proceeding with repair procedure.

5. Drill out and remove six 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 bonds and remove as necessary.

6. Apply heat to inside of tub along bond lines indicated by the scribe lines on the floor of the tub.
7. Pry up on the tub at the adhesive joint until tub bond breaks loose.
8. Remove damaged rear compartment panel.

1. Remove all original adhesive using suitable tool.
2. Scuff all bonding surfaces to ensure proper adhesion.
3. Clean and prepare all bonding surfaces prior to Sheet Moulded Compound (SMC) panel installation. Refer to Plastic Panels in Plastic Panel Information and Repair.
4. Temporarily install the tub. The panel must fit flush with the surface of the rails and impact bar.
5. Prime all bare metal surfaces with an approved anti-corrosion primer per GM P/N 4901M-D refinish manual. Do not top-coat any bonding surface.




Important: Use only approved adhesives. Refer to Rigid Plastic Part Repair Materials in Plastic Panel Information and Repair.

6. Apply a consistent bead of adhesive, 12 mm (½ in) diameter, to the rail surface.

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

7. Apply adhesive to the backside of the lock pillars, as well as over the fuel filler neck.



8. Install the tub orienting the frame locating pins.

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

9. Press down firmly on the entire tub to wet-out the adhesive.
10. Use six close-end rivets  (1) (GM P/N  9418420, or equivalent) in areas indicated along the bond line to hold the tub to the rails while adhesive cures.
11. Remove any excess adhesive squeeze-out as necessary.
12. Let adhesive cure according to adhesive manufacturer recommendations.
13. Install all related panels and components.