How do you change the rear brakes on a 1999 Oldsmobile Aurora do you need a c-clamp to compress the caliper?

To change the rear brakes on a 1999 Oldsmobile Aurora, first, remove the wheel and brake caliper. Before replacing the brake pads, you will need to compress the caliper piston to make room for the new pads. A C-clamp is indeed helpful for this task, as it can be used to gently push the piston back into the caliper housing. After compressing the piston, replace the pads, reassemble the caliper, and reinstall the wheel.