Ok first of all a big thanks to Kenny at Cobalt-addiction.com. I LOVE the way the top looks, and can't wait to put the bottom in next weekend.
Also this is my first how to so bear with me.
Ok for the first step is to locate the rivets that keep the plastic shroud that covers the core support. These are marked with the red arrows Remove all of these and save them as you will need to put them back in later. Also you can take out the front 2 rubber hood stops now.
Take all of these out by pulling the center part up, then gently pry the clip out of the whole.
Next you are going to remove 2 plastic screws from the backside of the stock grill. They are located about headlight height, and almost look more like a hex head then phillips, a phillips screwdriver will remove them.
This is what they look like when removed.
Next you need to remove the stock Chevy emblem. by removing the 2 10mm nuts from the backside of the emblem
Now you have to release the stock grille from the plastic clips holding it in place. These will be the color of your car, and you can see them by gently pulling the shroud up.
The grill is going to push in towards the engine to release. Took a little coaxing, but finally you will get it free, and it will slide back and you will be able to remove it.