GM 84273025 Pad Kit, Rear Disc Brk

To start with, take off the brake fluid reservoir cap and use a syringe or suction gun to remove brake fluid until the reservoir is half full, then loosen the wheel lug nuts, jack up your vehicle and secure it on jackstands. Take off the tires and examine the brake disc. If needed, take off the disc and pads. Prior to separating the brake caliper into its components you should clean it with a brake system cleaner and dry it. Place an oil pan below so as not to splash oil all over when working on breaks; do not blow in them using air compressor. In case you have to work on brakes do that using hand tools only for removing or installing of caliper mounting bolts thus holding guide pin by open-end wrench when removing or installing of rear caliper mounting bolts. Do not separate brake line from caliper unless replacing caliper itself also note position of inner and outer pads in case of removal without pad replacement. Place new pads back on with some high-temperature grease on guide pin before reinstalling it after which tighten mounting bolts at specified torques while depressing brakes few times so as to bring pads in contact with disc surface. Lastly, confirm if there is enough brake fluid in reservoir as well as check how functional brakes are again before returning car into normal usage mode.

After reassembling the brake, tighten the mounting bolts to the proper torque specifications and depress the brake pedal a few times to bring the pads into contact with the disc.

THEY ARE SEMI METALIC..