Truck like kinda stutter/bog

[Theeonyxblackgmc]

So I have an 18 sierra 5.3 L v8 Gasoline engine and this just recently started happening but when I hit full throttle when it gets like 4,000 rpm’s and higher it like starts to bog/stutter would anyone know what it could be or some way to figure out what is happening 

[CamGTP]

With a scan tool and the truck in front on me, I'd only be guessing.

 

Could be misfires, could be a fueling issue. Tough to say really. If the check engine light is flashing during this, then you know it's a misfire.

[Theeonyxblackgmc]

@CamGTPso every time it’s happened I haven’t noticed it come on and I do get a check engine light for evap system the code is p0455 or something like that, but would that effect it in anyway?

[silveradosid]

dirty air filter, dirty maf sensor. is the valve in the exhaust seized

[rlcole321]

Try turning off the traction control and if it still does it, then check the exhaust, cat's, Flapper valve (behind the muffler, it's for controlling AFM/DOD "drone" and adds back pressure to exhaust). Since it's direct injected (injectors fire into the cylinder, not the intake), could be a fuel starvation problem (borderline Hi pressure fuel pump), as long as the air filter is good.  Just a couple of ideas!