On my 5.3L, it has been getting a really bad intermittent rough idle and for the most part idles with aduible misfires. When I rev the engine, you can also hear the misfires. I've check/replaced everything. The only thing left is crank and/or cam shaft sensor. I did a scan and logged "current cylinder firing" and noticed that all most of the cylinders are not showing.
Attached is the config and log. Let me know what you guys think.