[shorod]

Welcome to the forum! There was no video link, but you would not be able to attach a video directly anyway. You need to host the video on a video sharing site, then link to the video here.

Since you feel you've ruled out spark plugs and wires, what about either coil or fuel injector? Before being too concerned about a lifter issue you'd want to do either a compression test or a cylinder leak down test.

Does your Silverado have an individual coil per cylinder or does it share one coil for multiple cylinders?

-Rod