You need to drill 8 mm (5/16 in) plug weld holes as necessary in locations noted from the original panel, prepare all mating surfaces and apply GM-approved Weld-Thru coating or equivalent to all mating surfaces. Then you need to position the
Radiator support, plug the weld accordingly, and clean and prepare all welded surfaces. After that, you need to apply the sealers and anti-corrosion materials to the repair area, paint and repair the area, and install all related panels and components. Finally, you need to connect the negative battery cable and enable the SIR system.