How to Replace the Rotor in a Pontiac Grand Prix

The Pontiac Grand Prix utilizes four brake rotors, also known as brake discs, to keep your car braking safely. Rotors tend to last for quite a while before they need to be changed, but if they become warped or worn down and can't be resurfaced, then it's time to replace them. The process is pretty easy and you can do it in your own garage.

Instructions

1

Drain half of the brake fluid from the master cylinder to prevent overflow. Next, raise your Grand Prix using a jack and jack stands to support your vehicle. Block the wheels to keep your car from rolling while you work. Remove the first tire and wheel assembly.

2

Remove the caliper mounting bolts. Use a c-clamp over the caliper to compress the pistons into the caliper bore to give you enough clearance to slide the caliper off of the rotor. The caliper must remain connected to the brake hose through the installation, so hang the caliper from the undercarriage of your Grand Prix while you work.

3

Pull off the old rotor and then clean the area with a damp cloth. Slide the new rotor into position on the hub.

4

Discard the wire and then replace the caliper and brake line to its original position. Tighten and torque the caliper mounting bolts. Replace the wheel assembly and tire.

5

Repeat this process for each additional rotor. Then, lower your Pontiac, tighten and torque the lug nuts and refill the master cylinder with new brake fluid. Pump the brake until you get a firm pedal and then road test your car to make sure the new rotors are working correctly.