rattle under my 2001 cavalier when in second

Hey i was wondering if anybody could help me out.. I have a 2001 cavalier 5 speed and sometimes when i start in second because the rpm's are so low is seems like the motor rattles like something in a tin can. It usually only happens in 2nd. Can anyone let me know what it is...

The infamous Getrag transmission Rattle. Happends in first and second at Low RPMs. Nothing you can do about it and GM is aware of it. They tried the recomended Tranny fluid to fix it but it didn;t help.

Don't lug your engine.

alright thanks.