Hey everyone. My 2015 Suburban LTZ is sputtering like misfires when under light acceleration.....kind of a quick jerking as acceleration stalls. When you give it more acceleration it goes away. It isn't throwing any codes. I am running premium gas, so I'm not sure it is a fuel quality issue. I took it to my normal mechanic and he said "this is above our head, you may need to take it to the dealership...we can't figure it out. Fuel is only getting to half of your engine." While I don't mind taking it to the dealership, that is always my least favorite option. I was seeing if someone here has had this before and could give ideas, just so I am prepared for if the dealer starts trying to take me for a ride. I have about 93,000 miles on the vehicle. I tried to search the forum and saw some fuel pump ideas, but it was on older models.

 

this question was posted in 2021? And not one single response. Is this forum a waste of time.

 

Hey Smitty, nice 1st post; give us a chance, lots of good info here for you

 

Torque Convertor Shudder? Well I see where gas is only getting to half the engine supposedly. Nevermind on the torque convertor shudder.

 

I have a 2016 with the identical problem, did you find a fix?

 

If all the evap has been checked and replaced. Fuel pump is going or (unfortunately more than likely) high pressure fuel pump. Lines on it are one use as well. Thanks to the GM engineers.... it is under the intake manifold. Older chevys also had this issue but with fuel pressure regulator, also under intake.