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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1135 (Hydraulic Brake System) >> Repair Instructions >> Vacuum Brake Booster Replacement (3.6L LY7) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Lift the coolant reservoir up and away from the left front cross brace.
  2. Remove the left front cross brace. Refer to Brace Replacement - Front Fender Upper Diagonal - Left in Body Front End.
  3. Remove the engine control module (ECM) cover from the air cleaner housing.
  4. Remove the ECM and set aside. It is not necessary to disconnect electrical. Refer to Engine Control Module (ECM) Replacement in Engine Controls - 3.6L (LY7).
  5. Remove the air cleaner and the duct. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.6L (LY7).
  6. Remove the fuel line retaining bolt from the intake manifold.
  7. Disconnect the fluid level sensor switch from the brake master cylinder.
  8. Disconnect the brake lines from the master cylinder and remove the master cylinder. Refer to Master Cylinder Replacement .
  9. Remove the vacuum hose from the vacuum check valve. Reposition the vacuum hose.
  10. Remove the ABS module and bracket. Refer to Brake Pressure Modulator Valve (BPMV) Replacement in Antilock Brake System.
  11. Install the engine support fixture. Refer to Engine Support Fixture in Engine Mechanical - 3.6L (LY7).
  12. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  13. Remove the left front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
    14. Fig 1: Locating Left Front Fender Liner
    GM621343Courtesy of GENERAL MOTORS CORP.
  14. Remove the left front fender liner.
  15. Remove the left ball joint from the steering knuckle. Refer to Lower Control Arm Replacement in Front Suspension.
    16. Fig 2: View Of Stabilizer Bar Links
    GM623048Courtesy of GENERAL MOTORS CORP.
  16. Remove the stabilizer bar links. Refer to Stabilizer Shaft Link Replacement in Front Suspension.
  17. Remove the steering gear mounting bolts.
    18. Fig 3: Locating Left Side Frame To Body Bolts
    GM478740Courtesy of GENERAL MOTORS CORP.
  18. Remove the 2 left side frame to body bolts.
    19. IMPORTANT: DO NOT remove the frame to body bolts on the right side.
  19. Loosen, but do not remove, the right frame to body bolts.
  20. Position an oil drain pan under the transmission.
    21. IMPORTANT: Insure that all pipes, hoses, and wires are clear and not being bound or stressed when lowering the frame.
  21. Lower the vehicle.
  22. Using the engine support fixture, lower the powertrain.
  23. Remove the transmission filler tube. Refer to Fluid Filler Tube Replacement (LA1) or Fluid Filler Tube Replacement (LY7) in Automatic Transaxle - 4T65-E.
  24. Disconnect the fuel pipe retainer from the wheelhouse stud.
    25. Fig 4: Locating Brake Pedal Assembly Components
    GM180291Courtesy of GENERAL MOTORS CORP.
    NOTE: When disconnecting the pushrod from the brake pedal, the brake pedal must be held stationary or damage to the brake switch may result.
  25. Remove the booster push rod retaining clip and washer (2) from the brake pedal assembly.
  26. Remove the brake booster push rod (2) from the brake pedal (1).
    27. Fig 5: View Of Vacuum Brake Booster Components
    GM180993Courtesy of GENERAL MOTORS CORP.
  27. Remove the brake booster mounting nuts.
  28. Remove the brake booster.
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