sounds like some one took the corvette  emblem's and some other
features off a vette and put them on your truck

Greetings,

To the best of my knowlege there was no "Z06" package for this truck.  In
fact, I have never known Chevy to put any graphics on the front fenders or
quarter panels, but almost exclusively on the sides behind the rear wheels
(like the Z77 and 4x4 logos).  However, it's pretty easy to add an emblem
and replace the gauge face with one with custom graphics (white, blue,
flames, etc.).  They sell them on eBay all the time.

If you want to find out what options your truck has just open the glove box.
Inside there should be a label with a large group of 3-digit RPO codes that
identify everything from engine size, transmission, rear axle ratio, etc. ad
nauseum.  You can search on line for the RPO codes or post them here and
someone will let you know what the important ones mean.

Cheers - Jonathan