2014 Silverado miss fire rough ride

[Fahad Safdar]

Howdy 

I have a 2014 Chevy Silverado with 60k miles- its started to miss fire at 80MPH on the highways 

took it to the shop got an oil change done also replaced spark plugs and wires 

still had the miss fire 

checked all coils they were good 

looked at the injectors and they were all gummed up looking super horrible. 
put new injectors but the miss fire is still happening.. I am lost now. Anybody have any ideas? 

Edited March 24, 2021 by Fahad Safdar

[Ichie123]

Fuel pump. Possibly. Just had to replace ours. After a horrendous battle with the dealer misdiagnosing our issue.

[Fahad Safdar]

Fuel pump.. never thought of that! Mine has 60k miles by the way. 

[Lsgun1]

Why not test the fuel pressure instead just throwing a part at it?