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Please help!!   2008 GMC Sierra. 4.8.  Replaced fuel pump and FSM last year. Replaced evap solinoid last week.  Truck doednt want to start.  Turns over on first try. Then starts on second try.   Could it be a fuel sensor on fuel rail? 

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      Please help!!   2008 GMC Sierra. 4.8.  Replaced fuel pump and FSM last year. Replaced evap solinoid last week.  Truck doednt want to start.  Turns over on first try. Then starts on second try.   Could it be a fuel sensor on fuel rail? 
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