Sierra Classic 2500 4WD V8-8.1L (2007)
11. Slowly release the brake pedal.
12. Wait 15 seconds, then repeat steps 11-12 until a firm pedal is obtained. This will properly seat the brake caliper pistons and brake pads.
13. Fill the master cylinder reservoir to the proper level with clean brake fluid, if necessary. Refer to Master Cylinder Reservoir Filling.
