I don't know if this is a common problem, or even a problem at all but I've noticed that a rattling sound occurs when the transmission goes to 1500 RPMS. It seems like it's not in the engine, but more near the transmission/back of the car. What's causing it?

check your exost and your cataletic converter
i know my cover came loose and it mad ratalling.so just check for some loose bolts-covers-pipes-mufflers or any thing els


hopfully its not your tranny

Yup most of the time when it only happens at a specific rpm it's the exhaust or part of the exhaust. I know on my Greddy Power Extreme exhaust the baffles or whatever is in the resonator cracked and only vibrated at 2500rpms.

most likely its one of your heat shields on your exhaust or manifold, or your muffler has some holes in it = \

i used to have rattling from my heat shield under my manifold and by the catback, so just took it off, i never touch my exhause with my bare hands anyway = ]