Did u have an 04-05 or 06/07
It was an 05 with the LS6 engine.
Did u have an 04-05 or 06/07

Here's a quick pic of the one that I purchased. I ended up going with the 03. I got it for 10k and so far I'm happy with it.
So far I have:
Changed the transmission fluid, rear diff fluid, coolant, repaired a leaking exhaust flange, engine cleaning and found the factory bose sub