Grinding noise from procharger?

[prochargedvette]

My C5 procharger is making a grinding noise? Kind of nervous are the bearings going bad? If so whats involved in rebuilding one of these?

[DynamicTuningSolutions]

Is it everywhere or just idle where you hear it?

[99 C-5 F1C VETTE]

Procharger blowers at times make a grinding noise like marbles in the case and is ormal, check and see if its a gear drivin sound or something really is going on in the transmission, Check the oil in the case for any metal shavings, good luck bro