GMC 15942195 Front Brake Rotor

Loosen the lug nuts, remove wheels and lift the front end of the car onto jackstands in order to examine brake system. Put wheel back on and tighten the lugnuts to secure disk. After you have finished, ensure that caliper is far away from it by hanging with a wire. Take a close look at the disc surface for any signs indicating that it has been hit or damaged before, as well as test for its run out using dial indicator. The rotor may require resurfacing by an automotive machine shop if necessary. Besides, check whether the rotor thickness is within limits of specified minimum thicknesses set by manufacturer. To remove unbolt caliper mounting bracket, remove lug nuts and then take off disk from hub. If you are removing rear disc also disconnect caliper mounting bracket from rear knuckle. When installing place disk over threaded studs and install caliper and pad assembly that way; tighten bolts in calipers; mount wheels; lower vehicle; Tighten lugs; depress brake pedal until pad comes into contact with disk; check how brakes work before one enters a traffic moving situation when drive being done.

Loosen the lug nuts, remove wheels and lift the front end of the car onto jackstands in order to examine brake system. Put wheel back on and tighten the lugnuts to secure disk. After you have finished, ensure that caliper is far away from it by hanging with a wire. Take a close look at the disc surface for any signs indicating that it has been hit or damaged before, as well as test for its run out using dial indicator. The rotor may require resurfacing by an automotive machine shop if necessary. Besides, check whether the rotor thickness is within limits of specified minimum thicknesses set by manufacturer. To remove unbolt caliper mounting bracket, remove lug nuts and then take off disk from hub. If you are removing rear disc also disconnect caliper mounting bracket from rear knuckle. When installing place disk over threaded studs and install caliper and pad assembly that way; tighten bolts in calipers; mount wheels; lower vehicle; Tighten lugs; depress brake pedal until pad comes into contact with disk; check how brakes work before one enters a traffic moving situation when drive being done.

To inspect and replace brake discs, first loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands. Remove the brake caliper and visually check the disc surface for damage. Deep score marks or cracks may require disc refinishing or replacement. To check disc runout, place a dial indicator at a point about 1/2-inch from the outer edge of the disc. It's critical that the disc not be machined to a thickness under the specified minimum thickness, which can be checked with a micrometer. To remove the disc, remove the caliper mounting bracket bolts and slide the disc off the hub. To install the new disc, place it in position over the threaded studs, install the mounting bracket and brake pads, and then install the caliper onto the mounting bracket. Finally, install the wheel and lug nuts, lower the vehicle, and depress the brake pedal a few times to bring the brake pads into contact with the disc.

If the disc has excessive runout, it should be refinished.

The first step is to loosen the wheel lug nuts.

After installing the new disc, the wheel and lug nuts should be installed, the vehicle should be lowered, and the brake pedal should be depressed a few times to bring the brake pads into contact with the disc.

Look for any score marks or damage on the disc surface. Check both sides of the disc.

The first step is to loosen the wheel lug nuts.