Rear Brake Caliper Set 2 Piston For 00-07 Chevy GMC Cadillac Truck Full Size SUV. The brake caliper fits like a clamp on a wheel’s rotor to stop the wheel from turning when you step on the brakes. When you push the brake pedal, brake fluid creates pressure on pistons in the brake caliper, forcing the pads against the brake rotor and slowing your car.
