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?