GM Service Manual Online
For 1990-2009 cars only

All vehicles which have hydraulic brakes have a parking brake. It is recommended that the parking brake be burnished as part of the new vehicle break-in. The parking brake will work best after it has been burnished following these instructions:

  1. Make sure that there is no other traffic around, bring the vehicle speed up to 20 mph (32 km/h) and apply the parking brake. Let the vehicle come to a complete stop. Apply the base brakes and disengage the parking brake.
  2. Repeat the burnishing procedure in Step 1 a total of 10 times.
  3. Between stops, drive the vehicle about 2.5 miles (4 km).

Notice: Driving with the parking brake on can damage the transmission and brake system parts. Verify that the parking brake is fully released and the brake warning light is off before driving.