I ordered the caliper from Advance auto, and i don't think its the right one. The caliper doesn't have ANY of the e-brake parts, and for the life of me i don't know how it fits in the "cage" If someone can host pics i can show you what i have. There isn't a part number on the caliper, the box says 50-9774.

 

..is it a PBR caliper?

 

Yes it was. I got it sorted. It was a front caliper.. duh!! Now i have to wait for the new one.

 

Now i am pissed. I finally got the rear caliper but its missing half the parts!! There is NOTHING for the ebrake assy. except for 1 arm. Its even missing parts for the piston. What a joke. Do the GM calipers come with ALL the parts i need?