Do not pump the brakes. Just hold the brake pedal down firmly and let antilock work. A slight brake pedal pulsation might be felt or some noise noticed, but this is normal.
Antilock Brake System (ABS)
Braking in EmergenciesChevrolet Cobalt Owners Manual. Service Publications Ordering Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle suspension,
brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletins give additional technical service
information needed to knowledgeably service
General Motors cars a ...