2008 Tahoe rough idle cheap simple fix

For several months I had tried to figure out why my truck was idling so rough. I went through all the things I had researched for like cleaning the throttle body, looking for vacuum leaks not air leaks like I said in the video, pulled the plugs, checked wires for breaks in them, clean the throttle body, and put several types of fuel cleaner fuel treatment I mean I put at least eight different types of fuel treatment and or fuel cleaner in the tank over the last 4 months.