2003 Silverado, plastic liner on front bumper

I'm driving a 2003 1500 LS.

About a month ago, I bumped up on a high curb while parking and partially detached what I can only describe as the plastic liner on the bottom of the front bumper. Unfortunately, several of the holes used to pin the liner to the bumper were ripped out, so I couldn't simply find new pins/clips and re-attach it.

I've been looking online for a replacement but haven't had any luck even finding out what the proper name for the piece I need is. My main question is if it can be replaced separate from the entire bumper, and if so, what would be the appropriate name for the piece?

Anyhow, thanks for any help - hopefully someone here has some insight :smile:

I've outlined the part I'm referring to in the pic below:

http://img535.imageshack.us/img535/1153/bumper.jpg

I found it on GM Parts Direct under Bumper and Components, Air Deflector. They list it either with or without fog lamps for around $60.

Perfect - thank you!