why is my service brake system light on ?? on 2004 GMC Sierra 1500

also ABS & park brake lights on.
Problem occurs while driving. Will reset when I turn key off
and start the engine back up and thens comes back on 5 to 10 miles later

Asked by for the 2004 GMC Sierra 1500
Well, it could mean that the emergency brake has not been fully released.The ABS system light is on if something has occurred within the ABS system. Something faulty may have happened there, get it checked out!