Important: The radiator support assembly is made from mild steel hydroformed tube which is welded to the front structure. The radiator support assembly is serviced as a complete assembly. The bolt-on portion of the upper tie bar (1) as well as the left and the right fascia support brackets (2) are a part of the radiator assembly. If the damage is limited to these parts they can be ordered and replaced individually. Replacement of the radiator support assembly requires removal of the upper fender rails. Upper fender rail service extensions (3) are included with the radiator support assembly for efficient installation. If the damage permits, locate and cut off the front portion of the upper rails along the die mark indicators and install the replacement upper fender rail service extensions. This procedure must be performed on both sides of the vehicle. Left side only is shown.

1. Remove all of the related panels and components.
2. Restore as much of the damage as possible back to the factory specifications.
3. Note the location and remove the following as necessary:

•	The sealers

•	The sound deadeners

•	The anti-corrosion materials




4. Locate the two die-mark indicators on the upper fender rail.




Important: The edge of the masking tape must line up with the point of each die-mark arrow.

5. Apply the masking tape for the cut location over the die-marks and across the top of the upper rail.




Important: The tape edge facing the front of the vehicle is the proper location.

6. Cut the upper fender rail along the front edge of the tape line.



7. Locate and drill out all of the factory welds in the upper fender rail in front of the cut location.



8. If necessary, use a chisel in order to separate the upper fender rail extension from the radiator support.



9. Remove the upper fender rail extension.



10. Locate and drill out all of the factory welds in the upper wheelhouse area.



11. Locate and drill out all of the factory welds along the wheelhouse extension.



12. If necessary, use a chisel in order to separate the radiator support from the vehicle.



13. Remove the damaged radiator support.

Important: In area damaged beyond recognition, space plug weld holes every 40 mm (1-1/2 in) apart.

1. Prepare all of the attachment surfaces as necessary.
2. Apply weld-thru primer to all bare metal surfaces.



3. Position and align the radiator support using three-dimensional measuring equipment.



4. Plug weld accordingly with the frequent measurements to ensure the proper positioning.



5. Position and align the upper fender rail extension using the three-dimensional measuring equipment.



6. Plug weld accordingly with frequent measurements to ensure the proper positioning.



7. Clean and prepare all of the welded surfaces.




Important: Prior to refinishing, refer to publication GM 4901M-2001 GM Approved Refinish Materials for recommended products. Do not combine the paint systems. Refer to the paint manufacturer's recommendation.

8. Apply the following as necessary:

•	Apply the sound deadening materials.

•	Apply an approved anti-corrosion primer.

•	Apply the sealers and refinish as necessary.