I've noticed a popping or cliunking noise from my rearend when I take left turns. It's not turns under acceleration, it's only when coasting slowly around a turn that I notice it. anyone have this happen to them, or know what it could be?

 

Did you just recently have your rear end serviced? If so, they may not have put the limited slip additive back. With out this additive the rear has been known to creek, crack, and sound like it is coming apart when going around corners

 

Nope, car has 48k miles, have'nt had the rearend serviced, should I?

 

Yes and be sure to add the GM LSA.