GMC 20889648 Pipe Assembly, Front Brake Rear

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When replacing brake lines, it is crucial to use the correct parts and avoid using copper tubing. Steel brake lines can be purchased, and prefabricated brake lines with flared tube ends and fittings already installed are available at auto parts stores and dealer parts departments. These lines can be bent to the proper shapes using a tubing bender. During installation, it is important to ensure that the new line is well supported in the brackets and has sufficient clearance between moving or hot components. After installation, the master cylinder fluid level should be checked and fluid should be added as necessary. The brake system should be bled, and the brakes should be carefully tested before the vehicle is placed into normal operation.

To disconnect a brake hose from the brake line, the metal tube nut should be unscrewed with a flare nut wrench, and the U-clip should be removed from the female fitting at the bracket. The hose can then be removed from the bracket.