Remove the radiator air upper baffle/deflector. Refer to Radiator Air Upper Baffle and Deflector Replacement .
Radiator Grille Bolts (Qty: 4)
Notice: Refer to Fastener Notice in the Preface section.
Tighten7 N·m (62 lb in)
Here is what it shows for GMC but says Chevy is similar. Sorry not more specific but GM not very clear when it comes to Chevy for some reason.
Emblem Assembly (GMC)
Notice: Refer to Exterior Trim Emblem Removal Notice in the Preface section.