GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Venture Ext. 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Hydraulic Brake System Flushing

Caution: Use only SUPREME 11 or equivalent DOT 3 brake fluid from a clean, sealed container. Do not use fluid from an open container that may be contaminated with water. Improper or contaminated fluid will result in damage to components or loss of braking, with possible personal injury.

Notice: Pressure bleeding equipment must be of the diaphragm type. It must have a rubber diaphragm between the air supply and the brake fluid to prevent air, moisture, and other contaminants from entering the hydraulic system.

Notice: Avoid spilling brake fluid on any of the vehicle's painted surfaces, wiring, cables, or electric connectors. Brake fluid will damage the paint and the electrical connections. If any fluid is spilled on the vehicle, flush the area to lessen the damage.

Pressure Flushing

Tools Required

    • J 29532 Diaphragm Type Brake Bleeder
    • J 35589 Compact Brake Bleeder Adapter

    Object Number: 241624 Size: SH
  1. Clean the brake fluid reservoir cover and the surrounding area.
  2. Remove the brake fluid reservoir cover.
  3. Remove any remaining brake fluid in the reservoir.
  4. Fill the brake fluid reservoir with clean brake fluid. Refer to Master Cylinder Reservoir Filling .
  5. Install the J 35589 to the brake fluid reservoir.
  6. Connect theJ 29532 brake fluid hose to the bleeder adapter.
  7. Adjust the pressure bleeding equipment to 35-70 kPa (5-10 psi) and wait for approximately 30 seconds in order to ensure there is no leakage.
  8. Adjust the pressure bleeding equipment to 205-240 kPa (30-35 psi).
  9. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    10. Object Number: 179295 Size: SH
  10. Flush the brakes in the following sequence:
    11. • Right rear
    • Left front
    • Left rear
    • Right front
  11. Attach the bleeder hose (3) to the bleeder valve at each wheel.
  12. Place the other end of the bleeder hose into a container (2) in order to collect the draining brake fluid.
  13. Slowly open the bleeder valve and allow the fluid to flow.
  14. Close the valve when clean brake fluid begins to flow or at least 235 ml (8 oz) of fluid accumulates.

    15. Tighten

    1. Tighten the front caliper bleeder valves to 13 N·m (115 lb in).
    2. Tighten the rear caliper bleeder valves to 7 N·m (62 lb in).
    3. Tighten the rear wheel cylinder bleeder valves, if equipped, to 7 N·m (62 lb in).
  15. Remove the bleeder adapter.
  16. Replace all of the following rubber components:
    17. • The brake hose assemblies. Refer to Front Brake Hose Replacement , and Rear Brake Hose Replacement if equipped.
    • The wheel cylinder. Refer to Wheel Cylinder Overhaul if equipped.
    • The master cylinder rubber parts. Refer to Master Cylinder Overhaul .
    • The brake caliper seals. Refer to Front Brake Caliper Overhaul , and Rear Brake Caliper Overhaul In Disc Brakes.
  17. Replace the brake pressure modulator valve. Refer to Brake Pressure Modulator Valve Replacement in Anti-Lock Braking System.
  18. Inspect the brake fluid level in the reservoir. Fill the reservoir to the correct level if necessary.
  19. Install the brake fluid reservoir cap.
  20. Bleed the entire brake hydraulic system. Refer to Hydraulic Brake System Bleeding .
  21. Lower the vehicle.

Manual Flushing

    Object Number: 241624 Size: SH

    Important: Use a suitable container and/or shop rags in order to catch fluid and prevent the fluid from contacting any painted surfaces.

  1. Clean the brake fluid reservoir cover and the surrounding area.
  2. Remove the brake fluid reservoir cover.
  3. Remove any remaining brake fluid in the brake fluid reservoir.
  4. Fill the brake fluid reservoir with clean brake fluid. Refer to Master Cylinder Reservoir Filling .
  5. Install the brake fluid reservoir cover.
  6. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    7. Object Number: 179295 Size: SH
  7. Flush the brakes in the following sequence:
    8. • Right rear
    • Left front
    • Left rear
    • Right front
  8. Attach the bleeder hose (3) to the bleeder valve at each wheel.
  9. Place the other end of the bleeder hose into a container (2) in order to collect the draining brake fluid.
  10. Slowly open the bleeder valve and allow the fluid to flow.
  11. Close the valve when clean brake fluid begins to flow or at least 235 ml (8 oz) of fluid accumulates.

    12. Tighten

    1. Tighten the front caliper bleeder valves to 13 N·m (115 lb in).
    2. Tighten the rear caliper bleeder valves to 7 N·m (62 lb in).
    3. Tighten the rear wheel cylinder bleeder valves, if equipped, to 7 N·m (62 lb in).
  12. Replace all the following rubber components:
    13. • The brake hose assemblies. Refer to Front Brake Hose Replacement , and Rear Brake Hose Replacement if equipped..
    • The wheel cylinder. Refer to Wheel Cylinder Overhaul if equipped.
    • The master cylinder rubber parts. Refer to Master Cylinder Overhaul .
    • The brake caliper seals. Refer to Front Brake Caliper Overhaul , and Rear Brake Caliper Overhaul In Disc Brakes.
  13. Replace the brake pressure modulator valve. Refer to Brake Pressure Modulator Valve Replacement in Anti-Lock Braking System.
  14. Inspect the brake fluid level in the reservoir. Fill the reservoir to the correct level if necessary.
  15. Install the brake fluid reservoir cap.
  16. Bleed the entire brake hydraulic system. Refer to Hydraulic Brake System Bleeding .
  17. Lower the vehicle.