GM 13408579 Pad Kit, Rear Disc Brake

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Replacing brake pad for rear disc brakes is as easy as replacing brake pad for front ones, Starting with the process you need to take off the cap that is on top of the brake fluid reservoir. But before attempting to do this, first remove the wheel lug nuts, lift the car, and place suitable jack stands where the wheels are off the ground, on the other side of the car use blocks to support the wheels that are still on the ground. Taking off the wheels, make servicing of one brake assembly only, and if necessary, use the assembled brake as an example. Check the brake disc; if any machining is to be done, it is performed next to get at the pads. After the removal of the old brake pads, use the C-clamp in order to push the piston back into its bore so as to be able to accommodate the new ones. On rear disc brakes do not push the piston beyond 1/32 inch (1 mm) to protect the parking brake mechanism. Clean the brakes with brake cleaner before you take the brakes apart. On the front brakes you will have to remove the caliper lower guide pin bolt, swinging the caliper outwards from the disc and suspend it with some wires. For rear brakes, it is necessary to remove both guide pin bolts, then to dismount the caliper and to support it likewise. Pull out the outer brake pad from the support plates of the caliper mount and thereafter, withdraw the inner pad. Check the support plates and if they are faulty or if they are loose, then replace them. Damp the respective areas on the mounting bracket which are in contact with the other components with silicone brake lubricant before affixing the support plates. Paint the new brake pads with the powder anti squeal compound on the back side only. For rear calipers, turn the piston all the way down or until the notches on the sideways of the piston meet the holes in the caliper. Place the inner pad and make sure that the brake wear sensor is inserted correctly before putting the new outer pad. Remove the caliper guide pins from the brake rotor, clean them, apply caliper lube and reinstall the caliper and guide pin bolts the tighten them to the recommended torque. Lastly, have the brake fluid level checked, and make sure the vehicle is reviewed before going back into normal use after the installation of the new brake pads is done, this should be done by firmly depressing the brake pedal several times in order to ensure the pads press against the disc.