A cap pop off the front of the block and now all the water drains out

What is your question?

Acap pop off from the front of the block while temperatures were low I turned on the car and it popped off and now nothing but water comes out from it. It is directly underneath where you add oil in it

What makes this problem better or worse?

Nothing it won't hold no water

How long has your 2007 Chevrolet Suburban 1500 had this problem?

3 weeks