I bought a 2007 Silverado NBS and the radiator isn't like the ones I've always dealt with, there's no cap on the radiator. Say something bad happens like the serpentine belt breaks and cuts the radiator hose. The belt and hose can be replaced, but how does one fill the radiator? Through the plastic tank? Thanks in advance.

 

Yeah i guess through the tank but as long as the cooling system is closed. ie there isnt a tube coming from the tank going to the ground.