2009 Buick LaCrosse Brake Booster

First, disconnect the negative battery cable, remove the left instrument panel insulator panel, and remove the vacuum power booster pushrod nut. Next, remove the brake pedal pushrod bushing, and disconnect the vacuum power brake booster pushrod from the brake pedal. After that remove the fuel injector sight shield, disconnect the brake fluid level sensor electrical connector, and remove the 2 master cylinder nuts. Next, remove and place aside the master cylinder, secure the master cylinder with heavy mechanics wire, and remove aside the vacuum power brake booster check valve. Install the J 22805-B to the vacuum power brake booster, and while pressing the locking tab, rotate the vacuum power brake booster counterclockwise. Finally, remove the vacuum power brake booster, and remove the J 22805-B from the vacuum power brake booster.

The procedure is to turn the ignition switch to °OFF°, and disconnect and remove the power brake booster vacuum sensor.