What is this rattling noise??

[Dsun]

So i had my rear driveshaft off to do my diff seals/rebuild and now I hear this rattle coming from my shifter. Sounds like a paint can rattle...only comes on when I go over a bump at like 30-40mph. Goes away after a few seconds. When I shift gears while its rattling it is still present. What is it???

Sounds pretty identical to this guy but mine only rattles when I go over a bump.

http://www.youtube.com/watch?v=pOcj_hJAzYg

[gath]

I think your harmonic balancer is touching the selector rod.

[Dsun]

had it on lift and checked it, nothign out of the ordinary...still has that rattle when going over rough road. It clicks faster as RPM increases, sometimes it clicks/rattles for a second and very soft, other times its louder and clicks for a long time. Driving me nuts

[808e30325i]

hows the transmission fluid?

[Herr Faust Schinken]

does it happen to get worse the faster your going? i have a vibration though my shifter that sound and feels like that looks.