Hi,
I spoke to someone in the consulate and below is the process he mentioned.
There were two parts for issuing the PCC. (Check the chicago consulate site for details).
In part-1, we submit the documents and they would try getting the clearence from India. After 60 days, if they don't receive any, they are authorized to issue PCC from the consulate here. So, part-2 could start after 60 days whether they receive clearance from India or not.
If it's past 60days from the date you submitted for PCC, you could send a follow-up letter with the PHASE-2 documents and they'll take care.
Good Luck.
Regards,
tatvi