Chevy 6.0 LS Stumbles and Runs Rough at Idle

[@MrOmerta]

Same kinda problem I’m having with 2002 1500hd mine starts up fine first mins driving it feels light and push pedal gets up and goes. then drives sluggish after lil driving or feels heavy only way I can explain it. Feels likes it misfiring or running off few cylinders. tuner that did mine disabled a lot of sensors so mine not showing misses. So ima be testing a lot this weekend haven’t done a tune up in a awhile. So going to pull plugs check coil packs and compression. Mine has ss2 cam . Had bad exhaust leaks fixed those was nice n quiet then this started while after. Cleaned the throttle and cleaned mass air flow. No affect on it. But then sometimes feels like it runs Normal. And when it doesn’t get up and go just push pedal more then usually I would have to and it goes. Use to be just tap n lightly push pedal and would get up and go. Sounds like it Boggs down and sounds different out the exhaust. And I know I have bad grammar skills. So I apologize ahead of time. When I comment on stuff usually get told it comes out gargled non sense or am i speaking English. Anyways good video hopefully I can figure mine out Thai weekend.

[@NoPlanProjects]

Good luck! Hope you figure it out.

[@kevindrake1034]

I would have put a new plug in , that plug could have been cracked or faulty .

[@jeremiahfiek5495]

Dont drink diet soda!!! Its even less "diet" than regular soda. Aspartame is terrible for ya.