08 Saturn Astra, 32,xxx miles.
When shifting from 1st gear to 2nd, it makes a sound that sounds like dropping a bag of tools a couple inches above the floor. The sound seems like it is coming from up above the brake and gas pedals.
Here is the interesting thing: it only does it after I turn the car on and start driving, no matter if the car is hot or cold. It doesn't do it when I'm taking off from a red light or anything. I even tried shifting into park at a red light and shifting back into drive, and it didn't do it. I guess it only does it after the car was off.