J 42058 Frame Adapter Clamp

Important: The frame rails and bumper impact bars must be serviced as required, and returned to three-dimensional coordinates before any Sheet Moulded Compound (SMC) repairs are attempted.

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 interior components related to the rear of the vehicle.



3. Remove the quarter panels.
4. Remove the rear bumper cover.
5. Remove the roof bow cover.
6. Apply heat to the Rear Compartment Panel Frame side of the bond area and pry up on the damaged panel. Be careful not to damage the rear compartment panel.
7. Once the rear surround is completely removed, clean off most of the adhesive bead. Leave a few small areas of adhesive, about 25 mm (1 in) in length, in place to act as shims for the new rear surround.

1. Scuff the service panel bonding surface to ensure good adhesion.



2. Temporarily assemble rear end of vehicle to check alignment with the doors. This includes installation of the quarter-panels, roof bow cover, and rear hatch. Place shims as necessary to achieve proper panel alignment and establish adhesive thickness.
3. Remove and disassemble panels for installation.
4. Scuff all bonding surfaces to ensure proper adhesion.
5. Clean and prepare all bonding surfaces prior to SMC panel installation. Refer to Plastic Panels in Plastic Panel Information and Repair.
6. 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.

7. Apply a consistent bead of adhesive to the entire perimeter of the rear compartment panel mating flange (1). Apply enough adhesive for proper wet-out.
8. Install shims and rear surround, clamping them in place.
9. Tool excess adhesive to form a consistent leak-proof bond.
10. Allow to cure according to the adhesive manufacturer's recommendations.
11. Remove clamps and install roof bow panel.
12. Install all related panels and components.