CTS 2006-2007, CTS-V 2005-2007, DTS 2006-2007

Brake Calipers

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Removal & Installation



CTS
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove 2 / 3 of the brake fluid from the master cylinder.
  6.  
  7. Remove the front wheel. Mark the relationship between the wheel and the wheel stud for re-installation purposes.
  8.  
  9. Install 2 wheel nuts to keep the rotor in place.
  10.  
  11. Using a large C-clamp against the inboard pad, compress the caliper piston into the caliper to provide clearance during removal.
  12.  
  13. Place a catch pan under the caliper.
  14.  
  15. Disconnect the brake hose from the caliper. Cap the line to prevent excessive fluid loss or contamination.
  16.  
  17. Remove the caliper mounting bolts and remove the caliper from the vehicle.
  18.  
  19. Inspect the mounting bolts; sleeves and boots for wear and/or damage. Replace parts as necessary.
  20.  

To install:

  1. Before installing the caliper, make sure the piston is fully seated in the bore and the brake pads are properly seated.
  2.  
  3. Lubricate the mounting bolt shafts and inner diameter of the sleeves with silicone grease.
  4.  
  5. Install the caliper in the caliper mounting bracket and install the mounting bolts. Torque the mounting bolts to 46 ft. lbs. (63 Nm).
  6.  
  7. Connect the brake hose with the bolt and new gaskets. Torque the brake hose bolt to 37 ft. lbs. (50 Nm).
  8.  
  9. Refill the master cylinder and bleed the brake system.
  10.  
  11. Remove the 2 wheel nuts securing the rotor.
  12.  
  13. Install the wheel and tire assembly.
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Road test the vehicle for proper brake system operation.
  18.  

CTS-V
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. If the brake fluid level is midway between the maximum-full point and the minimum allowable level, no brake fluid needs to be removed from the reservoir before proceeding.
  4.  
  5. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove brake fluid to the midway point before proceeding.
  6.  
  7. Remove the front wheel.
  8.  
  9. Carefully insert a plastic flat-bladed trim tool between the rotor and inboard brake pad.
  10.  
  11. Carefully apply pressure to the inboard brake pad until both caliper inner pistons are compressed into the caliper piston bores.
  12.  
  13. Carefully insert a plastic flat-bladed trim tool between the rotor and outboard brake pad.
  14.  
  15. Carefully apply pressure to the outboard brake pad until both caliper outer pistons are compressed into the bores.
  16.  
  17. Remove the brake hose and copper gaskets from the brake caliper. Cap the line to prevent excessive fluid loss or contamination.
  18.  
  19. Remove the caliper-to-knuckle mounting bolts.
  20.  
  21. Remove the brake caliper.
  22.  

To install:

  1. Apply threadlocker to two-thirds of the threaded length of the caliper to knuckle mounting bolts.
  2.  
  3. Apply a thin coat of high temperature silicone brake lubricant to the brake caliper pin.
  4.  
  5. Install the brake caliper. Tighten the mounting bolts to 96 ft. lbs. (130 Nm).
  6.  
  7. Connect the brake hose with the bolt and new gaskets. Tighten the bolt to 25 ft. lbs. (34 Nm).
  8.  
  9. Refill the master cylinder and bleed the brake system.
  10.  
  11. Install the wheel.
  12.  
  13. Road test the vehicle for proper brake system operation.
  14.  

J55 & JL9 Systems
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Inspect the fluid level in the brake master cylinder reservoir.
  4.  
  5. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove brake fluid to the midway point before proceeding.
  6.  
  7. Raise the vehicle and suitably support.
  8.  
  9. Mark the relationship of the wheel to the axle flange.
  10.  
  11. Remove the tire and wheel assembly.
  12.  
  13. Install a large C-clamp over the body of the brake caliper with the C-clamp ends against the rear of the caliper body and against the outer brake pads.
  14.  
  15. Tighten the C-clamp until the caliper pistons are compressed into the caliper bores enough to allow the caliper to slide past the brake rotor.
  16.  
  17. Remove the C-clamp from the brake caliper.
  18.  
  19. Remove the brake hose to caliper bolt attaching the brake hose to the brake caliper.
  20.  
  21. Remove and discard the 2 copper brake hose gaskets. These gaskets may be stuck to the brake caliper and/or the brake hose end.
  22.  
  23. Plug the opening in the brake caliper and pipe to prevent fluid loss and contamination.
  24.  
  25. Remove the brake caliper pin bolts.
  26.  
  27. Remove the brake caliper.
  28.  

View of brake caliper mounting, pin bolt (1) bracket bolts (2)

To install:

  1. If reusing the brake caliper pin bolts and retainers, clean the brake caliper pin bolts and retainers using denatured alcohol, or equivalent.
  2.  
  3. Dry the brake caliper pin bolts and retainers, using non-lubricated, filtered air.
  4.  
  5. Install the brake caliper over the brake pads and into the brake caliper bracket.
  6.  
  7. Apply a thin coat of high temperature silicone brake lubricant to the brake caliper pin bolts: DO NOT apply lubricant to the brake pad hardware.
  8.  
  9. Install the brake caliper pin bolts. Tighten the brake caliper pin bolts to 83 ft. lbs. (113 Nm). For the (JL9) brake system, tighten to 27 ft. lbs. (36 Nm).
    NOTE
    Install NEW copper brake hose gaskets.

  10.  
  11. Assemble the brake hose bolt and the new copper brake hose gaskets to the brake hose.
  12.  
  13. Install the brake hose to caliper bolt to the brake caliper.
  14.  
  15. Tighten the brake hose to caliper bolt to 33 ft. lbs. (45 Nm). For the (JL9) brake system, tighten to 30 ft. lbs. (40 Nm).
  16.  
  17. Bleed the brake system.
  18.  
  19. With the engine OFF , gradually apply the brake pedal to approximately 2 / 3 of its travel distance.
  20.  
  21. Slowly release the brake pedal.
  22.  
  23. Wait 15 seconds, then repeat steps 9-10 until a firm brake pedal apply is obtained; this will properly seat the brake caliper pistons and brake pads.
  24.  
  25. Install the tire and wheel assembly.
  26.  
  27. Lower the vehicle.
  28.  

 
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