Buick didn't start

Make sure battery has a full charge and connections all good. If it cranks good but won't start, have a helper crank it while you visually for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse. Any applicable trouble codes? W/o testing, not sure how to help? What about your security system? Just to add, if no rpm signal, it won't start. You need to do some testing and get back to us. At the moment, I need more info.

Yep new battery just had auto place install..they thought that solved it ..it ran til got home then after hour or so tried starting was tubing it seems like 2008 has fuel relay under back seat could that be issue? Aaa tow guy said it might be fuel pump ?? I'm a girl so not sure the proper lingo

No codes on the dash if that's what you mean