Trouble cranking up the hoe

[marionso14]

So for about the last month I have had trouble starting my 07 tahoe. It turns over but it acts as if it is not getting either fuel or air. It almost always cranks the second try. It drives normal as if it's getting enough fuel/air when driving. I have cleaned and replaced the mass airflow sensor with no change. Is there any other option besides the fuel pump?

It did throw a CEL for a few days and it said both banks were lean. However the light has since went off but still having issues.

Any ideas would be greatly appreciated