Ok reading this still has me worried. I have a 2015 Silverado 1500 5.3L with 62,000 miles and the ticking just started up recently. It was never present before, repeat, NEVER present before. How can that be and also be normal? This honestly has me worried that I have a bad lifter and what that can cost me down the road. I purchased my truck in late 2015 and literally put highway miles on it since due to the distance of my job from home. I baby my truck honestly, never raced it. You can look at my profile and see what I've done to it. Also no tunes whatsoever.
I'm truly concerned