A couple issues

[ss2000]

Ls1 what's happenin. So recently my car has been making a clunk noise when I go from reverse to drive, can't really tell where it's coming from but maybe my rear end, I know for sure it's not my tranny mount, and sometimes when at a stand still and start to drive it happens. When slowing to a stop it happens too but not all the time. Any suggestion. And when driving near a wall like the center divider on the freeway , when I roll my window down I hear a clicking noise , so I guess the sound is reflecting back to me off the wall, but is that noise a serious issue, it's not extremely loud but I can hear it. I remember a while back changing my diff fluid and when I logged on the site today I just heard about some additive that goes in there . Help me please.

[Supershafts]

Check your joints in the shaft and see if you have excessive play at the pinion

[c5z28]

^ Check the u-joint-I think that is what it is called. Mine does it from park to reverse sometimes.

[az gt eater]

check your front mount for torque arm. it bolts to the tail of the tranny. And its supposed to have rubber and b solid.

[ss2000]

thAnks for the replies, it looks like I have a job to do with the car this weekend.