2008 Buick Enclave Brake Booster

You need to place the vehicle on a level surface and apply the parking brake, apply and release the brake pedal several times with the engine off, remove the air cleaner assembly, disconnect the master cylinder fluid level sensor electrical connector, remove the vacuum brake booster check valve and hose assembly and position aside and the vacuum brake booster vacuum sensor and position aside, release the front and rear brake pipes, remove the 2 nuts from the brake pressure modulator valve (BPMV) assembly, remove the 2 brake master cylinder nuts and the master cylinder assembly and position aside, remove the left side instrument panel insulator panel, the steering column opening filler, the brake pedal pushrod retaining clip, the brake pedal pushrod clevis pin and disconnect the pushrod from the brake pedal, the intermediate steering shaft, and the 4 vacuum brake booster nuts, pull the vacuum brake booster forward and tilt upward slightly, and then remove the vacuum brake booster.

You will need to turn the ignition switch to the off position, apply the brake pedal several times, and then disconnect the power brake booster vacuum sensor electrical connector.

You need to align the vacuum brake booster mounting studs to the dash panel, install the vacuum brake booster and the 4 vacuum brake booster nuts, the intermediate steering shaft, connect the brake pedal pushrod to the brake pedal and install the clevis pin, install the brake pedal pushrod retaining clip, install the steering column opening filler and the left side instrument panel insulator panel, position the master cylinder to the vacuum booster, install the 2 brake master cylinder nuts, position the BPMV assembly over the studs, install the 2 nuts to the BPMV and bracket assembly and the front and rear brake pipes to the routing clip on the frame rail, connect the master cylinder fluid level sensor electrical connector, and then install the vacuum brake booster vacuum sensor, the vacuum brake booster check valve and hose assembly to the vacuum brake booster and the air cleaner assembly.