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HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 137 (ANTILOCK BRAKE SYSTEM)REPAIR INSTRUCTIONSANTILOCK BRAKE SYSTEM AUTOMATED BLEEDAUTOMATED BLEED PROCEDURE
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol

Automated Bleed Procedure

2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Automated Bleed Procedure
WARNING: This page is about a different car, the 2019 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
    CAUTION:

    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 and support the vehicle. Lifting and Jacking the Vehicle
  2. Remove the tire and wheel assemblies. Tire and Wheel Removal and Installation (6-Lug Wheel)Tire and Wheel Removal and Installation (8-Lug Wheel)
  3. Inspect the brake system for leaks and visual damage. Symptoms - Hydraulic Brakes
  4. Lower the vehicle.
  5. Prepare the brake bleeding equipment and the vehicle for a pressure bleed of the base hydraulic brake system. Hydraulic Brake System Bleeding (Pressure)
  6. Inspect the battery state of charge. Battery Inspection/Test
  7. Install a scan tool.
  8. Turn the ignition ON, with the engine OFF.
  9. With the scan tool, perform the following steps:
    1. Select Diagnostics
    2. Select the appropriate vehicle information
    3. Select Chassis
    4. Select Electronic Brake Control Module (EBCM)
    5. Select Special Functions
    6. Select Automated Bleed
  10. With an assistant ready, raise and support the vehicle. Lifting and Jacking the Vehicle
    11. NOTE:
    • Apply the brake pedal when instructed, using moderate effort.
    • Ensure the pedal remains applied until instructed to release by the scan tool.
    • Do not exceed the time period allowed by the scan tool for having the bleeder valves open.
    • The bleed sequence for each corner is as follows:
      • Left front
      • Right front
      • Right rear
      • Left rear
  11. Perform the automated bleed procedure as instructed by the scan tool.
  12. If the automated bleed procedure is aborted, a malfunction exists. If a DTC is detected, refer to the diagnostic trouble code (DTC) list to diagnose the DTC. Diagnostic Trouble Code (DTC) List - Vehicle
  13. After completion of the automated bleed procedure, press and hold the brake pedal to inspect for pedal firmness.
  14. If the brake pedal feels spongy, repeat the bleed procedure completely.
  15. Remove the scan tool.
  16. Install the tire and wheel assemblies. Tire and Wheel Removal and Installation (6-Lug Wheel)Tire and Wheel Removal and Installation (8-Lug Wheel)
  17. Lower the vehicle.
  18. Adjust the brake fluid level. Brake Master Cylinder Reservoir Filling
  19. Road test the vehicle while confirming the brake pedal remains high and firm.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.