GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Chevy P12 Chassis 🢒 Brakes 🢒 Park Brake 🢒 Park Brake Cable Service/Adjustment

    CAUTION:: If the actuator will not hold pressure, do not unthread the parking brake cable from the actuator piston. The cable is under tension and unthreading the cable will cause the cable to spring and can result in personal injury.

  1. Before beginning this adjustment, the parking brake linings wear measurement must be made in case they need replacement. Refer to Parking Brake Shoe Inspection .
  2. Block the vehicle wheels.
  3. With the vehicle in the neutral (N) position, turn the ignition switch to the ON position and check the parking brake for proper holding ability.

    4. Object Number: 258718 Size: SH

    Important: If adjustment is required, make sure the actuator assembly is in the fully released position and the actuator jamb nut was tightened to maximum thread engagement (30 mm or 1.18 in) or bottoms out on the actuator rod. If the jamb nut and collar are not in the proper position on the actuator rod, ensure that they are readjusted to their proper position.

  4. Tighten the jamb nut to its proper torque and position.

    5. Tighten
    Tighten the jamb nut by hand to 45 N·m (33 lb ft).

  5. If installing a new park brake cable, refer to Park Brake Cable Replacement .
  6. Check the parking brake holding ability.

    7. Object Number: 258757 Size: SH
  7. If the parking brake is too tight or loose, remove the cotter pin (1) to the clevis.
  8. Remove the clevis pin (2).
  9. Slide the clevis from the bellcrank (4).
  10. Move the clevis assembly (3) away from the bellcrank (4).
  11. Move the bellcrank (4) with sufficient force to take up the clearance between the linings and the drum.
  12. With the lever in the applied position, adjust the clevis (3) in or out in order to align the clevis with the holes in the lever. Minimum thread engagement is 14 mm (0.55 in).
  13. Install the clevis (3) to the cable. Make sure the cable extension has bottomed out at the clevis so it does not interfere with the operations of the crank.
  14. Lubricate the clevis and pin with GM No. 2, High Temperature Grease (9985254).
  15. Install the clevis pin (2) and the cotter pin (1)
  16. Install the clevis (3) and cotter (1) pins to secure the bellcrank (4).
  17. Apply the parking brake and note the holding ability.
  18. Repeat the adjustment procedure if necessary.
  19. Remove the wheel blocks.