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Home >> Cadillac >> 2021 >> CT4 V, 4WD >> 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. GM5880984Courtesy 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. Lubricate the brake master cylinder reservoir grommets with GM approved brake fluid from a clean, sealed brake fluid container. Adhesives, Fluids, Lubricants, and Sealers 
  4. GM5883040Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Reservoir Grommet (1) - Install NEW [3x]

  5. GM5883039Courtesy of GENERAL MOTORS COMPANY

    Secure the master cylinder reservoir (1) into the hold down clip and lower the front of the brake master cylinder reservoir until it is in the fully installed position.

  6. CAUTION:

    Refer to Fastener Caution .

  7. Brake Master Cylinder Reservoir Bolt (2) - Install NEW and tighten - Fastener Specifications 
  8. GM5493276Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder (1) - Install

  9. GM5324653Courtesy of GENERAL MOTORS COMPANY

    Brake Master Cylinder Nut (1) - Install and tighten [2x] - Fastener Specifications 

  10. GM5880985Courtesy of GENERAL MOTORS COMPANY

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

  11. Ensure the brake pedal retainer is secured by lightly pulling rearward on the brake pedal (1).
  12. Remove the caps from the 4 brake front pipe inlets.
  13. GM5310879Courtesy of GENERAL MOTORS COMPANY

    Instrument Panel Lower Trim Panel Insulator (1) - Install

  14. GM5310878Courtesy of GENERAL MOTORS COMPANY

    Install the tabs into the instrument panel lower trim panel insulator (1).

  15. GM5310877Courtesy of GENERAL MOTORS COMPANY

    Instrument Panel Lower Trim Panel Insulator Retainer (1) - Install

  16. Instrument Panel Insulator Bolt (2) - Install and tighten [2x] - Fastener Specifications
  17. Instrument Panel Insulator Nut (3) - Install and tighten [2x] - Fastener Specifications
  18. GM5300282Courtesy of GENERAL MOTORS COMPANY

    Attach the hood primary latch release cable end retainer to the hood primary latch release cable handle (1).

  19. Connect the front floor courtesy lamp electrical connector.
  20. GM5488446Courtesy of GENERAL MOTORS COMPANY

    Front Brake Pipe Nut (2) - Install and tighten [2x] - Fastener Specifications 

  21. Rear Brake Pipe Nut (1) - Install and tighten [2x] - Fastener Specifications 
  22. GM5324655Courtesy of GENERAL MOTORS COMPANY

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

  23. GM5491702Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Brake Fluid Level Sensor - Connect

  24. GM5492906Courtesy of GENERAL MOTORS COMPANY

    Front End Sheet Metal Diagonal Brace (2) - Install

  25. Front End Sheet Metal Diagonal Brace Bolt (3) - Install and tighten [2x] - Fastener Specifications
  26. Front End Sheet Metal Diagonal Brace Nut (1) - Install and tighten - Fastener Specifications
  27. GM5422044Courtesy of GENERAL MOTORS COMPANY

    Plenum Front Panel (1) - Install

  28. GM5422041Courtesy of GENERAL MOTORS COMPANY

    Install the forward lamp wiring harness extension (3) into the plenum front panel.

  29. Plenum Front Panel Bolt (1) - Install and tighten [4x] - Fastener Specifications
  30. Plenum Front Panel Nut (2) - Install and tighten [3x] - Fastener Specifications
  31. GM5422039Courtesy of GENERAL MOTORS COMPANY

    Install the forward lamp wiring harness extension (3) into the plenum front panel.

  32. Plenum Front Panel Nut (1) - Install and tighten [3x] - Fastener Specifications
  33. Plenum Front Panel Bolt (2) - Install and tighten [3x] - Fastener Specifications
  34. GM5499583Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Deflector Water Deflector (1) - Install

  35. GM5499581Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Deflector Water Deflector Retainer (1) - Install [2x]

  36. GM5420344Courtesy of GENERAL MOTORS COMPANY

    Install the windshield wiper system module (2) in the vehicle.

  37. Windshield Wiper System Module Bolt (1) - Install and tighten [2x] - Fastener Specifications
  38. Connect the windshield wiper motor electrical connector.
  39. GM5420286Courtesy of GENERAL MOTORS COMPANY

    Windshield Wiper System Module Shield (1) - Install

  40. GM5417442Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Grille Panel (2) - Install

  41. Install the air inlet grille panel (2) between both hood hinges.
  42. Connect the windshield washer nozzle hose to the windshield washer pump hose.
  43. Air Inlet Grille Panel Retainer (1) - Install [6x]
  44. GM5421990Courtesy of GENERAL MOTORS COMPANY

    Install the front compartment side sight shields (2) to both sides.

  45. Install the front compartment side sight shield retainers (1) to both sides.
  46. GM5421986Courtesy of GENERAL MOTORS COMPANY

    Install the hood rear outer air inlet seals (2) to both sides.

  47. Install the hood rear outer air inlet seal retainers (1) to both sides.
  48. GM5417116Courtesy of GENERAL MOTORS COMPANY

    Install the air inlet grille panel extensions (1).

  49. Remove the masking tape from the body around the top edges of the air inlet grille panel extensions (1).
  50. Using a 50/50 mixture of isopropyl alcohol and clean drinkable water with a clean towel, remove any left over adhesive residue from the masking tape.
  51. GM5325063Courtesy of GENERAL MOTORS COMPANY
  52. Clean the windshield wiper transmission pivot shaft splines with a soft wire brush before installing the windshield wiper arms (3).
  53. Position the windshield wiper arms (3) on the windshield wiper transmission pivot shafts.
  54. Windshield Wiper Arm Nut (2) - Install and tighten [2x] - Fastener Specifications
  55. Windshield Wiper Arm Finish Cap (1) - Install [2x]
  56. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  57. Reprogram the brake system control module. Control Module References
  58. Bleed the brake system. Hydraulic Brake System Bleeding (JE5) , or Hydraulic Brake System Bleeding (J55) 
  59. Check for brake system leaks.
  60. GM5416557Courtesy of GENERAL MOTORS COMPANY

    If required, realign the windshield wipers to their respective alignment circles (1) on the windshield.

  61. Lubricate the windshield with clean washer fluid.
  62. Run the windshield wipers for two complete cycles then turn off the windshield wipers.
  63. Ensure the windshield wipers are in the full park position.
  64. Inspect the windshield wipers for proper position to the alignment circles (1) on the windshield.