2011 Yukon engine noise

[Gdorroh]

I have a 2011 Yukon Denali with the 6.2 engine. It has 155000 miles and just noticed this ticking noise from one side of engine. Any ideas what it might be?

 

[swathdiver]

I hear injectors and coils firing but no exhaust leak that I can tell.

Do you have a long extension or mechanic's stethoscope? Stick one end in your ear and touch the other to various parts until you isolate the sound. Watch your hair around the moving parts!

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.