Clutch dust getting into the fluid is a well known issue with the LS motors and manual transmissions.
Has been happening on C6 corvettes from some time - only on the C6 you can cycle the fluid with fresh stuff given the separate tank.
Not sure why they did this on the Camaro - I like being able to cycle out my fluid periodically with fresh DOT4. Easy process, only take a few minutes and I can have clean fluid.
Check your fluid after about 10k and you won't believe how black it looks. Definately clutch dust getting by.