Sky L4-2.4L (2007)
14. Extract pieces of the impact bar which are left attached to the rail ends.
15. Straighten and deburr the rail ends. Keep the perimeter and shape of the rail ends as original as possible.
Installation Procedure
1. Temporarily position the impact bar for proper fit and alignment.
2. Clean and prepare all of the welded surfaces.
3. Apply GM-approved weld-thru coating or equivalent as necessary to the inside of the rail ends. Refer to Anti-Corrosion Treatment and Repair.
4. Position the bumper impact bar to the vehicle using 3-dimensional measuring equipment. Clamp the impact bar into place.
Important: If no trace of the original welds are present, follow the pattern specified for welding the side rails to the impact bar.
5. Using a metal inset gas (MIG) welder, stitch weld the rear bar to the frame rail ends.