Sierra 1500 2WD V8-5.3L Hybrid (2004)
1. Install the gasket to the booster.
2. Install the vacuum booster.
3. Notice:
Refer to Fastener Notice in Service Precautions.
Install the 4 vacuum booster mounting nuts.
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Tighten the nuts to 33 Nm (24 ft. lbs.).
4. Install the pushrod (3) and the stop lamp switch (2) to the brake pedal stud (1).
5. Install the pushrod retaining clip (4) to the brake pedal stud (1).
6. Install the vacuum hose to the brake booster check valve.
7. Install the master cylinder.
8. Release the park brake and unblock the wheels.
