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Auto Bleed Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The Auto Bleed Procedure may be terminated at any time during the process by pressing the EXIT button. No further Scan Tool prompts pertaining to the Auto Bleed procedure will be given. After exiting the bleed procedure, relieve bleed pressure and disconnect bleed equipment per manufacturers instructions. Failure to properly relieve pressure may result in spilled brake fluid causing damage to components and painted surfaces.
  1. Raise the vehicle on a suitable support. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove all 4 tire and wheel assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  3. Inspect the brake system for leaks and visual damage. Refer to BRAKE FLUID LOSS or SYMPTOMS (HYDRAULIC BRAKES) in Brakes. Repair or replace as needed.
  4. Inspect the battery state of charge. Refer to BATTERY INSPECTION/TEST in Engine Electrical.
  5. Install a scan tool.
  6. Turn ON the ignition, with the engine OFF.
  7. With the scan tool, establish communications with the ABS/TCS system. Select Special Functions from the ABS/TCS menu. Select Automated Bleed from the Special Functions menu.
  8. Bleed the base brake system. Refer to MANUAL BLEEDING or PRESSURE BRAKE BLEEDING in Brakes.
  9. Follow the scan tool directions until the desired brake pedal height is achieved.
  10. If the bleed procedure is aborted, a malfunction exists. Perform the following steps before resuming the bleed procedure:
  11. When the desired pedal height is achieved, press the brake pedal in order to inspect for firmness.
  12. Remove the scan tool.
  13. Install the tire and wheel assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  14. Inspect the brake fluid level. Refer to MASTER CYLINDER RESERVOIR FILLING in Brakes.
  15. Road test the vehicle while inspecting that the pedal remains high and firm.
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