I purchased a used 2015 Chevy Silverado LTZ Z71 Off Road, 5.3L, from a local dealership in the middle of January 2017 with 21400 miles, now 22800 mile. I never noticed the noise while driving the truck but when I was out of the cab with it running it sounds like it's more than a minor ticking noise. I took it back to get it checked out and the Service Manager at the Dealership said it was normal, took them a week to tell me that.
I'm not a mechanic but I'm having a difficult time with their analysis so I recorded the noise for others to listen to - https://goo.gl/photos/uof3kuzJuJ2y7sns6
I'm at a loss and this is a sound that shouldn't be coming from any vehicle with less than 25000 miles. Another thing is that I have noticed that the oil pressure shows 30lbs when warm and idling.
