Canyon, Colorado 2004-2005

Bleeding the ABS System

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  1. Install a scan tool to the vehicle.
  2.  
  3. Start the engine and allow the engine to idle.
  4.  
  5. Depress the brake pedal firmly and maintain steady pressure on the pedal.
  6.  
  7. Using the scan tool, begin the automated bleed procedure.
  8.  
  9. Follow the instructions on the scan tool to complete the automated bleed procedure. Release the brake pedal between each test sequence.
  10.  
  11. Turn the ignition OFF.
  12.  
  13. Remove the scan tool from the vehicle.
  14.  
  15. Fill the brake master cylinder reservoir to the maximum-fill level with Delco Supreme 11® GM P/N 12377967 or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
  16.  
  17. Bleed the hydraulic brake system.
  18.  
  19. With the ignition OFF, apply the brakes 3-5 times, or until the brake pedal becomes firm, in order to deplete the brake booster power reserve.
  20.  
  21. Slowly depress and release the brake pedal. Observe the feel of the brake pedal.
  22.  
  23. If the brake pedal feels spongy, repeat the automated bleeding procedure. If the brake pedal still feels spongy after repeating the automated bleeding procedure inspect the brake system for external leaks.
  24.  
  25. Turn the ignition key ON, with the engine OFF; check to see if the brake system warning lamp remains illuminated.
  26.  
  27. If the brake system warning lamp remains illuminated, DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
  28.  
  29. Drive the vehicle to exceed 8 mph to allow ABS initialization to occur. Observe brake pedal feel.
  30.  
  31. If the brake pedal feels spongy, repeat the automated bleeding procedure until a firm brake pedal is obtained.
  32.  

  1. Install a scan tool to the vehicle.
  2.  
  3. Start the engine and allow the engine to idle.
  4.  
  5. Depress the brake pedal firmly and maintain steady pressure on the pedal.
  6.  
  7. Using the scan tool, begin the automated bleed procedure.
  8.  
  9. Follow the instructions on the scan tool to complete the automated bleed procedure. Release the brake pedal between each test sequence.
  10.  
  11. Turn the ignition OFF.
  12.  
  13. Remove the scan tool from the vehicle.
  14.  
  15. Fill the brake master cylinder reservoir to the maximum-fill level with Delco Supreme 11® GM P/N 12377967 or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
  16.  
  17. Bleed the hydraulic brake system.
  18.  
  19. With the ignition OFF, apply the brakes 3-5 times, or until the brake pedal becomes firm, in order to deplete the brake booster power reserve.
  20.  
  21. Slowly depress and release the brake pedal. Observe the feel of the brake pedal.
  22.  
  23. If the brake pedal feels spongy, repeat the automated bleeding procedure. If the brake pedal still feels spongy after repeating the automated bleeding procedure inspect the brake system for external leaks.
  24.  
  25. Turn the ignition key ON, with the engine OFF; check to see if the brake system warning lamp remains illuminated.
  26.  
  27. If the brake system warning lamp remains illuminated, DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
  28.  
  29. Drive the vehicle to exceed 8 mph to allow ABS initialization to occur. Observe brake pedal feel.
  30.  
  31. If the brake pedal feels spongy, repeat the automated bleeding procedure until a firm brake pedal is obtained.
  32.  

 
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