Tried it all

[James1998]

2016 Chevy 2500 6.0 gas 4x4 high country Was driving then went into limp mode sounded like intake manifold gasket so I replaced it the valley gasket both o rings on all injectors and throttle body gasket put everything back to spec bled the fuel line Cycled the ignition then tried to start and it won’t start unless foot is to the floor and then it fires up for about a split second revs and sounds like there is no exhaust and dies I cleared codes reset computer and checked for new code doesn’t throw any codes no lights just won’t run properly I’ve already rebuilt the front diff last weekend now I’m doing all this during the week getting tired of working on a basically new truck any help would be Appreciated cause I’m out of ideas on what it could be unless it’s the exhaust manifolds cause that’s crossed my mind 

[silveradosid]

when it went into limp mode did you read the codes

[BigBadSierra]

It sounds more like you have fuel pressure issue.

[James1998]

Yes I read the codes that’s how I confirmed it was the intake manifold gasket so I went down got the complete set changed them all now I’ve gotten it to throw codes so now maybe I can get it to actually work 

[James1998]

Fuel pump yay me and it has a full tank thank god for 2x6s 

[durandetto]

They almost never fail on a low tank. I do this for a living and 90% fuel pumps fail with 75% or more fuel in them.

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