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Park Brake System Diagnosis

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: This diagnostic table is designed to diagnose only the components of the park brake system in order to determine if the park brake system is operating properly.
  1. Were you sent here from a hydraulic brake symptom? If so, go to step  4 . If not, proceed to next step.
  2. Were you sent here from a park brake symptom? If so, go to step  4 . If not, proceed to next step.
  3. Is the symptom related to the ability of the park brake system to hold and/or release? If so, see PARK BRAKE SYSTEM  under DIAGNOSTIC STARTING POINT. If not, see HYDRAULIC BRAKE SYSTEM  under DIAGNOSTIC STARTING POINT.
  4. Raise and support the vehicle with the rear axle supported by jack stands. Shift the transmission into neutral. With the park brake released, attempt to rotate the rear wheels to check the park brake for a significant amount of drag. Does the park brake have a significant amount of drag? If so, go to step  11 . If not, proceed to next step.
  5. Shift the transmission into neutral. Apply the park brake. Attempt to rotate the rear wheels to check the park brake for a significant amount of drag. Does the park brake have a significant amount of drag? If so, proceed to next step. If not, go to step  7 .
  6. Release the park brake. Rotate the rear wheels to check the park brake for a significant reduction in the amount of drag. Did the park brake exhibit a significant reduction in the amount of drag? If so, go to step  22 . If not, go to step  11 .
  7. Visually check the park brake cable connection and the cable that is accessible on the underside of the vehicle for disconnection and/or damage. Was the park brake cable disconnected and/or damaged? If so, proceed to next step. If not, go to step  9 .
  8. Reconnect or replace the park brake cable as necessary. See PARK BRAKE CABLE  under REMOVAL & INSTALLATION. When complete, proceed to next step.
  9. Check the adjustment of the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Was the park brake adjusted properly? If so, go to step  11 . If not, proceed to next step.
  10. Adjust the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Were you able to attain adjustment of the park brake? If so, go to step  16 . If not, proceed to next step.
    11. CAUTION: Do not depress the brake pedal with the brake rotors and/or the brake drums removed, or with the brake calipers repositioned away from the brake rotors, or damage to the brake system may result.
  11. Remove the park brake drum. See PARK BRAKE DRUM  under REMOVAL & INSTALLATION. Inspect the park brake shoe hardware for looseness, damaged, broken or missing components. Check the park brake lever for a seized condition. Does the park brake hardware and/or the park brake lever require replacement? If so, proceed to next step. If not, go to step  13 .
  12. Replace park brake hardware components as necessary. See PARK BRAKE SHOES  under REMOVAL & INSTALLATION. Replace the park brake lever as necessary. When complete, proceed to next step.
  13. Have an assistant apply and release the park brake, while you observe the park brake cable for free movement. Did the park brake cable move freely? If so, proceed to next step. If not, go to step  17 .
  14. Check the adjustment of the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Was the park brake adjusted properly? If so, go to step  16 . If not, proceed to next step.
  15. Adjust the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Were you able to attain adjustment of the park brake? If so, proceed to next step. If not, go to step  27 .
  16. With the transmission still in neutral, apply the park brake. Attempt to rotate the rear wheels to check the park brake for a significant amount of drag. Release the park brake. Rotate the rear wheels to check the park brake for a significant reduction of drag. Did the park brake apply and release properly? If so, go to step  29 . If not, return to symptom that sent you to this procedure.
  17. Disconnect the park brake cable connection that is accessible on the underside of the vehicle and check the cable for free movement. Does the park brake cable require replacement? If so, proceed to next step. If not, go to step  19 .
  18. Replace the park brake cable (not releasing properly). See PARK BRAKE CABLE  under REMOVAL & INSTALLATION. When complete, proceed to next step.
  19. Disconnect the park brake cable connection accessible inside the vehicle at the park brake pedal assembly and check for free movement. Replace the park brake cable if it does not have free movement. See PARK BRAKE CABLE  under REMOVAL & INSTALLATION. Did you find and correct a condition? If so, go to step  25 . If not, proceed to next step.
  20. Disconnect the park brake release handle assembly cable connection from the park brake pedal assembly and check for free movement. Replace the park brake release handle assembly if the release cable does not have free movement. See PARK BRAKE RELEASE HANDLE ASSEMBLY  under REMOVAL & INSTALLATION. Did you find and correct a condition? If so, go to step  25 . If not, proceed to next step.
  21. Replace the park brake pedal assembly (not releasing properly). See PARK BRAKE PEDAL ASSEMBLY  under REMOVAL & INSTALLATION. When complete, go to step  26 .
  22. Check the adjustment of the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. If so, go to step  29 . If not, proceed to next step.
  23. Adjust the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Were you able to attain adjustment of the park brake system? If so, go to step  28 . If not, proceed to next step.
  24. Remove the park brake drum, if it has not yet been removed. See PARK BRAKE DRUM  under REMOVAL & INSTALLATION. Check the park brake lever for a seized condition. Replace the park brake lever as necessary. Did you find and correct a condition? If so, proceed to next step. If not, go to step  27 .
  25. Adjust the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Were you able to attain adjustment of the park brake system? If so, go to step  28 . If not, go to step  27 .
  26. Adjust the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Were you able to attain adjustment of the park brake system? If so, go to step  28 . If not, return to symptom that sent you to this procedure.
  27. Replace the component that is used to adjust the park brake system; the park brake cable clevis. Adjust the park brake. See PARK BRAKE ADJUSTMENT  under ADJUSTMENTS & INSPECTION. Did you complete the replacement and adjustment? If so, proceed to next step. If not, return to symptom that sent you to this procedure.
  28. With the transmission still in neutral, apply the park brake. Attempt to rotate the rear wheels to check the park brake for a significant amount of drag. Release the park brake. Rotate the rear wheels to check the park brake for a significant reduction of drag. Did the park brake apply and release properly? If so, proceed to next step. If not, return to symptom that sent you to this procedure.
  29. Install or connect any components that were removed or disconnected during diagnosis. When complete, park brake system okay.
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