Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Power Brake Booster Nuts
    GM2151573Courtesy of GENERAL MOTORS CORP.
  1. Install the power brake booster gasket.
  2. Install the power brake booster.
  3. CAUTION: Refer to Fastener Caution .
  4. Install the power brake booster nuts (1) and tighten to 36 N.m (27 lb ft).
  5. Fig 2: Identifying Stoplamp Switch
    GM2151569Courtesy of GENERAL MOTORS CORP.
  6. Apply a thin coat of high temperature lubricant, GM P/N 12345994 (Canadian P/N 10953501) to the brake pedal pivot pin.
  7. Install the stoplamp switch (1) and simultaneously connect the power brake booster pushrod.
  8. Connect the stoplamp switch electrical connector.
  9. Fig 3: Identifying Power Brake Booster Pushrod Retaining Clip
    GM2151568Courtesy of GENERAL MOTORS CORP.
  10. Install the power brake booster pushrod retaining clip (1).
  11. Rotate the power brake booster retaining clip 360 degrees to ensure the clip is fully engaged in the brake pedal pivot pin groove.
  12. Fig 4: Identifying Power Brake Booster Pushrod Retaining Clip Bolt
    GM2151563Courtesy of GENERAL MOTORS CORP.
  13. Install the power brake booster pushrod retaining clip bolt (1) and tighten to 10 N.m (89 lb in).
  14. NOTE: Ensure the O-ring seals are properly positioned on the power brake booster inlet and outlet hose fittings.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.