GM Service Manual Online
For 1990-2009 cars only
  1. Remove the park brake boot from the console by squeezing in the sides while pulling upward.
  2. Caution: Refer to Vehicle Lifting Caution in the Preface section.

  3. Raise the vehicle on a hoist enough to remove the rear wheels. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the rear wheel and the tire assemblies.

  5. Object Number: 891864  Size: SH
  6. Access to the park brake shoe adjuster is through a hole in the front face of the rotor.
  7. Using a medium size flat blade screwdriver, turn the adjuster at the rear rotor until the brake disc locks. Turn back the adjuster until the brake disc just moves freely.

  8. Object Number: 891761  Size: SH
  9. Pull the park brake lever to the third click.
  10. Tighten the adjuster nut on the park brake lever until the rear wheel can just be turned by hand, heavy drag, equal to both the rear wheels.
  11. Important: After installation of any new park brake system components (e.g., park brake lever, cable, drum brake shoes, adjuster, lever, rear disc brake caliper, etc.), the park brake system must be set prior to performing the final park brake adjustment. To set the park brake system after performing initial adjustment, pull up on the park brake lever 3 or 4  times with approximately 445 N·m (100 lb) of force.

  12. Apply and release the park brake several times. There should be no drag when the park brake lever is in the rest position.
  13. Pull the park brake lever to the third click. There should be heavy drag at both the wheels when turned by hand.
  14. If necessary, repeat steps 3-5 until the adjustment is correct.
  15. Important: If both rear wheels do not exhibit similar drag in steps 3-5, check for damaged or incorrectly installed rear disc or drum brake assembly components, park brake cables, and/or park brake lever assembly. Correct as necessary. Return to step 3 of this procedure.

  16. Install the park brake lever boot.
  17. Install the wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  18. Lower the vehicle from the hoist.