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Rail Replacement - Rear Section

Rail Replacement - Rear Section

Removal Procedure


1. Refer to Approved Equipment for Collision Repair Warning .

Refer to Glass and Sheet Metal Handling Warning

Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling and Enabling .


2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

3. Remove all related panels and components.

4. Repair as much of the damage as possible to factory specifications. Refer to Dimensions - Body .

5. Note the location and remove the sealers and anti-corrosion materials from the repair area, as necessary.

6.
Note

Do not damage any inner panels or reinforcements.


From inside of the vehicle, locate and drill out all factory welds. Note the number and location of the welds for installation of the rear rail lower - half.


7. Remove the No. 5 crossbar.

8. Remove the damaged rear rail lower - section



Installation Procedure


1.
Note

If the location of the original plug weld holes can not be determined, space the plug weld holes every 40 mm (1 1/2 in) apart.

Some panels may have structural weld-thru adhesive. It is necessary to replace the weld-thru adhesive with an additional spot weld between each factory spot weld.


Drill 8 mm (5/16 in) plug weld holes in the service part as necessary in the locations noted from the original panel.


2. Prepare all mating surfaces as necessary.

3. Apply GM approved Weld-Thru Coating or equivalent to all mating surfaces. Refer to Anti-Corrosion Treatment and Repair .

4. Position the rear rail lower - rear section, rear rail upper, and No. 5 crossbar to the vehicle using 3-dimensional measuring equipment. Clamp the parts into place.


5. Plug weld accordingly.


6. Clean and prepare all welded surfaces.

7. Apply the sealers and anti-corrosion materials to the repair area, as necessary. Refer to Anti-Corrosion Treatment and Repair .

8. Paint the repair area. Refer to Basecoat/Clearcoat Paint Systems .

9. Install all related panels and components.

10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

11. Activate the SIR system. Refer to SIR Disabling and Enabling .