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Home >> GMC >> 2023 >> Terrain AT4 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Brake Master Cylinder Replacement - With Power Brake Booster and Electronic Brake Control Module >> Installation Procedure

Installation Procedure

  1. GM6087085Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Install a NEW brake pedal retainer (1) to the brake pedal.

  2. Ensure the locking tabs on the brake pedal retainer are fully engaged in the brake pedal.
  3. GM6074343Courtesy of GENERAL MOTORS COMPANY

    Maneuver the brake master cylinder (1) into the vehicle.

  4. GM6087084Courtesy of GENERAL MOTORS COMPANY

    Engage the brake pedal (1) to the brake master cylinder push rod by pushing inwards.

  5. Ensure the brake pedal retainer is secured by lightly pulling rearward on the brake pedal (1).
  6. GM6074341Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @Brake System Control Module - Connect

  7. GM6074338Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Nut (1) - Install and tighten [3x] 22 N.m (16 lb ft)

  8. GM6074331Courtesy of GENERAL MOTORS COMPANY

    Remove the caps from the 4 brake pipe inlets.

  9. Reposition the brake pipes (1) and install and tighten the 4 front brake pipe nuts (2) to 18 N.m (13 lb ft).
  10. GM6054620Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir (1) - Install - Brake Master Cylinder Reservoir Replacement 

  11. Radiator Surge Tank - Install - Radiator Surge Tank Replacement
  12. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (KL9)
  13. Reprogram the brake system control module. Control Module References
  14. Bleed the brake system. Hydraulic Brake System Bleeding (Manual) , or Hydraulic Brake System Bleeding (Pressure) 
  15. Check the brake system for leaks.