What does it mean when the service brake system warning comes on for my 2011 GMC Yukon XL?

When the service brake system warning light comes on in your 2011 GMC Yukon XL, it indicates a potential issue with the brake system that requires immediate attention. This could be due to low brake fluid levels, worn brake pads, or a malfunctioning brake component. It's crucial to have the brake system inspected by a qualified technician to ensure safe operation of the vehicle. Ignoring this warning could lead to compromised braking performance and increased risk of an accident.