GM Service Manual Online
For 1990-2009 cars only

Park Brake Cable Service/Adjustment Manual AdjustmentSystem

Adjustment of manual adjustment park brake cable system is necessary whenever the rear brake cables have been disconnected. A need for park brake cable adjustment is indicated if the hydraulic brake system operates with good reserve, but a firm park brake pedal feel cannot be achieved with less than one full stroke of the park brake pedal.

  1. Cycle brake system.
  2. 1.1. Apply the service brake with a pedal force of approximately 660 N (150 lb) and release.
    1.2. Fully apply the park brake using approximately 550 N (125 lb) pedal force and release.
    1.3. Apply and release the park brake two additional times as described above.
    1.4. Park brake light should be illuminated after park brake has been depressed slightly.
  3. Check park brake pedal assembly for full release by turning the ignition on and inspecting PARK BRAKE warning light. Light should be off. If PARK BRAKE warning light is on and park brake appears to be fully released, pull the pedal back by hand and continue with the adjustment procedure.
  4. Raise the vehicle and suitably support. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Check park brake levers on rear calipers. Levers should be against the stops on the caliper housing. If levers are not against stops, check for binding in rear brake cables and position levers against stops.
  6. Tighten park brake cable at adjuster until either the left or right lever begins to move off stop.
  7. Loosen adjuster until lever which moved off of stop in step 5 is again resting on stop. Both levers should be resting on caliper stops after completing this step.
  8. Operate park brake several times to check adjustment. A firm pedal feel should be obtained by depressing the pedal less than one full stroke.
  9. Inspect left and right caliper levers. Both levers must be resting on stops after adjustment of parking brake.
  10. Check the operation of the park brake. Refer to Owner Checks and Services in Maintenance and Lubrication.

Park Brake Cable Service/Adjustment Automatic AdjustmentSystem

The adjustment for the automatic adjustment park brake system is incorporated into the park brake pedal assembly. Refer to Parking Brake Lever Pedal Assembly Replacement .

The park brake cable is self-adjusting. No adjustment is needed.