My 2012 gmc savanna cranking over but wont start ive checked relays and fuses

What is your question?

My hub has often dne things to it so I cant leave hme and he said it may b fuel pump or water in line but I cant trust what he says anymore. He couldve dne smethng im not smart enough to fig out w out sme advice. Please help me so im not stranded w 3 kids. Btw we r trying get divorced now. Hes a cheating asshole thats y he disassembles it so he can run off and not b caught.