2007 Chevy Silverado z71

Driving all day one Saturday and right when I got
home the truck died,  it wouldn't turn over for
nothing let it sit for about 30 minutes and the
ignition switch got stuck so it sat there turning
over I can turn the key off and it would stop.  I done
this for awhile.  First though it was the fuel filter
come to find out the year model truck I have
doesn't have a fuel filter so we replaced the fuel
pump.  After we replaced it I go to prime it and
after the their try I tried to turn it over first time I
thought I fixed it.  Well after a nice little ride I cut
the truck off and tried to crank it and nothing.  So
now when I try to crank it , it takes like 12 times to
crank the dang truck.  It's been doing this ever
since it died in the drive way.  Start is good I know
what a broke starter or a non starter sounds like.  I
really need help on this.
I figure it might be the fuel regulatory or the master
air flow sensor I don't really what I would like some
help before I drop big dollars in this try.  

This 2007 Chevy is the newer body styles