I have a 2007 chevy 6.0 gas when I crank in the morning it cranks fine no problem but when I drive it and then cut off for a while it will turn over 3or 4 times thencut switch off and do it again andit will turnover 2 or 3 times and then start and run fine no engine codes at all .I have changed fuel pump, and regulator and and fuel pump relay..I cleaned mass air flow sensor and still have same problem ..i read on another post on here about maybe a oil sending unit might be the problem or a service bulletin on a wiring harness plug bulletin ref #04-06-04-001c..just wondering if anyone can point me in the right direction Iam at the end of my rope..please help

 

I hope you're still active on the forum! Did you end up finding out what was wrong with it?
I just purchased a 2005 2500hd 6.0L, and have the similar problem.