Just went to the dealership to confirm fitment and price it all out, you need two parts, GM# 84691991(grille) & GM# 84678988 (lower fascia). The lower fascia is paint to match so you will have to have it painted. Everything is fully interchangeable. Ordered mine up today. Will post pics when its done.
I removed the stock grille, wasn't too bad. You have to remove outer fascias first to get grille off. They have snap in clips and one bolt behind the fender flare. Be prepared to buy replacement clips, they are very brittle, snapped a few of mine off pulling fender flare and fascias out.