Why is my 03 GMC Yukon not starting and staying running?

What is your question?

Yesterday I unhooked my terminal re-hooked it back up drove across town my truck shut down. It will crank over start for a second but will shut down as if it's not getting gas are that it is empty. When I know there is gas in it. We unhooked the breather box and sprayed starting fluid directly into the car and it will stay running if it is fed consistently. What could be wrong with it? Is it a fuel pump issue I feel pressure issue or this GM security system issue?

How long has your 2003 GMC Yukon had this problem?

Couple days