Single Piston Caliper
WARNING: This page is about a different car, the 2003 Buick Regal, 2003 Buick Century, 2002 Buick Regal, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
For single piston caliper applications, insert a discarded inner brake pad or block of wood in front of the piston. Using a large C-clamp installed over the body of the caliper and against the brake pad or block of wood, slowly bottom the piston in the bore.