As you asking for the contact details of the branch ST. CLAIR of the PNC bank the contact details and the working hours of the branch is given below :
Contact details

PNC Bank Branch - ST. CLAIR BANKING CENTER
285 FORT COUCH ROAD
Pittsburgh, PA 15241
Phone: (412) 835-0800
Lobby Hours
Sunday: Closed
Monday: 9:00 am - 7:00 pm
Tuesday: 9:00 am - 7:00 pm
Wednesday: 9:00 am - 7:00 pm
Thursday: 9:00 am - 7:00 pm
Friday: 9:00 am - 7:00 pm
Saturday: 9:00 am - 3:00 pm
Driveup Hours
Sunday: Closed
Monday: 9:00 am - 7:00 pm
Tuesday: 9:00 am - 7:00 pm
Wednesday: 9:00 am - 7:00 pm
Thursday: 9:00 am - 7:00 pm
Friday: 9:00 am - 7:00 pm
Saturday: 9:00 am - 3:00 pm


for knowing details of the any other branches of the PNC bank you may go to the official site of the PNC bank there you may see the link of the branches at the right corner of the page click on that link

it may redirected you to the branch locator page of the PNC bank from there you may get the details of the branches of the PNC bank for your convince here I am giving you the snapshot of that page

PNC bank branch locator