Rear Rail End Replacement Module Replacement

Important: Perform all of the steps on both of the rails for complete module replacement.

1. Remove all of the related panels and the components.
2. Visually inspect all of the damage forward of the rear module. Use 3 dimensional measuring in order to restore the damage to the factory specifications.
3. Separate the center and the rear module at the factory stitch weld (1) with a die grinder or an appropriate tool.
4. Pry the lower edge of cross tube bracket down (2) in order to allow the rear module to separate from the center module.
5. Remove the damaged rear module.

Important: Monitor the specified dimensions by frequently performing 3 dimensional measuring throughout the procedures.

1. Prepare all of the bare metal surfaces with a suitable weld-through primer.
2. Install and position the replacement module using 3 dimensional measuring.
3. Restore the bracket flange (2) for a flush fit to the new service part.
4. Tack weld the rear module into position. Inspect the service part for the proper dimensions.
5. Stitch weld the entire sectioning joint.

Important: Prior to refinishing, refer to GM P/N 4901MD-98 Refinish Manual for recommended products.

6. Clean and prepare the welded surfaces.
7. Apply approved anti-corrosion primer.
8. Apply the sealers.
9. Refinish the welded surfaces as necessary.
10. Install all of the related panels and the components.