GM 21019718 Caliper,Front Brake

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To remove the front wheels, start by loosening the lug nuts but not removing them. Then, raise the front of the vehicle and secure it on jackstands. Once the vehicle is secure, remove the front wheels. Next, disconnect the brake line from the caliper and plug it to prevent contaminants from entering the brake system and to minimize brake fluid loss. Remove the caliper guide pins and detach the caliper from its mounting bracket. To install the caliper, reverse the removal procedure and remember to replace the sealing washers on the brake line fitting with new ones. Tighten the caliper guide pins and the brake line banjo fitting bolt to the specified torque. Finally, bleed the brake system and install the wheels and lug nuts. Lower the vehicle and tighten the lug nuts to the proper torque. For the rear wheels, follow a similar process. Loosen the lug nuts, raise the rear of the vehicle, and secure it on jackstands. Remove the rear wheels and unscrew the brake line from the caliper using a flare-nut wrench. Remove the caliper mounting bolts and detach the caliper from its mounting bracket. To install the caliper, reverse the removal procedure, tightening the caliper mounting bolts and brake line fitting securely. Bleed the brake system, install the wheels and lug nuts, and lower the vehicle, tightening the lug nuts to the specified torque.

After removing the front wheels, you should disconnect the brake line from the caliper and plug it to prevent contaminants from entering the brake system and to minimize brake fluid loss.