GrandPrix, Impala 2006-2008, Monte Carlo 2006-2007

Brake Disc (Rotor)

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Removal & Installation




CAUTION
Dust and dirt accumulating on brake parts during normal use may contain asbestos fibers from production or aftermarket brake linings. Breathing excessive concentrations of asbestos fibers can cause serious bodily harm. Exercise care when servicing brake parts. Do not sand or grind brake lining unless equipment used is designed to contain the dust residue. Do not clean brake parts with compressed air or by dry brushing. Cleaning should be done by dampening the brake components with a fine mist of water, then wiping the brake components clean with a dampened cloth. Dispose of cloth and all residue containing asbestos fibers in an impermeable container with the appropriate label. Follow practices prescribed by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) for the handling, processing, and disposing of dust or debris that may contain asbestos fibers.

  1. Using a suction gun, remove approximately 2 / 3 of the brake fluid from the master cylinder. The reason for this is that the caliper pistons must be pushed back into their bores so the caliper can be removed from the rotor. This could cause the brake fluid to overflow from the reservoir onto painted surfaces or wiring.
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  3. Raise and safely support the vehicle on safety stands.
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  5. Mark the relationship of the wheel to the hub so it can later be installed in the same relationship. This helps retain the balance of the rotating assembly.
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  7. Remove the tire and wheel assembly.
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  9. It is not necessary to remove the brake lines or parking brake cable (as equipped) when removing a caliper to service the brake rotors. It is necessary to use care not to damage the brake hose by letting the caliper hang. The weight of the caliper can damage the brake hose. Remove the caliper and suspend it from the strut with a wire hook or suitable piece of wire. Do NOT disconnect the brake hose or allow the caliper to hang from the brake line.
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  11. Remove the rotor assembly by simply pulling it off the hub.

    Click image to see an enlarged view

    Fig. The rotor is removed by sliding it straight off the lug studs

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To install:

  1. Clean all parts well. Make sure the metal contact surfaces between the brake rotor and the hub bearing flange are clean. Sandpaper and/or wire brush these areas to make sure they are clean.
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  3. Install the brake rotor over the hub assembly.
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  5. Install the brake caliper.
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  7. Install the wheel and tire assembly.
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  9. Carefully lower the vehicle, then fill the master cylinder reservoir to the FULL level with the correct type of DOT 3 brake fluid from a clean, unsealed container.
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  11. Firmly depress the brake pedal three times before moving the vehicle. This reseats the brake pads and moves the caliper pistons back to their operating positions. Do not attempt to move the vehicle until a firm brake pedal has been established.
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