Chevrolet Sonic: Brake Adjustment

Chevrolet Sonic Owners Manual

Every moderate brake stop, the disc brakes adjust for wear. If rarely making moderate or heavier brake stops, the brakes might not adjust correctly. Very carefully making a few moderate brake stops about every 1 600 km (1,000 miles) will adjust the brakes properly.

If the vehicle has rear drum brakes and the brake pedal goes down farther than normal, the rear drum brakes might need adjustment. Adjust them by backing up and firmly applying the brakes a few times.