2004 yukon 1500

Hello I have a problem my yukon when I turn the key the starter turns over & keeps turning when I turn the key back to off & try again than it starts what can I look for thanks richram

Anyone have any ideas on what to look for

Extended cranking to start is what I get here, I would check fuel pressure at the rail for starters, 60-65 psi, also may need a fresh fuel filter. This assumes good plugs and wires of course.

thanks i will try it