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Home >> Oldsmobile >> 1997 >> Bravada >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Bleeding Brake System >> Abs Bleeding Procedure

Abs Bleeding Procedure

NOTE: Bleeding ABS system requires the use of Tech 1 scan tool. An assistant is required when performing bleeding procedures.
  1. Raise and support vehicle. Begin bleeding at right rear wheel. Install a clear plastic hose to bleed screw. Immerse other end of hose in container that is partially filled with clean brake fluid.
  2. Open bleed screw 1/2 to 1 full turn. Have assistant slowly depress brake pedal until it reaches full travel. Hold pedal until bleed screw is closed. Release brake pedal and wait 10-15 seconds. Repeat until clean bubble-free brake fluid is present at wheel bleed screw.
  3. Check master cylinder fluid level every 4-6 strokes of brake pedal to avoid running system dry. Repeat steps 2) and 3) on left rear, then right front, then left front. After bleeding all 4 wheels, go to next step.
  4. Using scan tool in FUNCTION TEST, run FUNCTION TEST 4 times consecutively while applying the brake pedal firmly. Release brake pedal between each test.
  5. Rebleed all 4 wheels using steps 2) and 3) to remove remaining air from brake system. Ensure brake pedal feel is appropriate before attempting to drive vehicle. Rebleed as many times as necessary to obtain appropriate pedal feel.
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