This is my fourth Duramax, I had a 2010, 2013, 2015, and now a 2022; however, this is my first L5P. After about a week of owning it I noticed a tic sound coming from the passenger side of the engine. It only does it on de-acceleration such as when slowing down. To me it sounds like a lifter or two tapping. I am a former ASE certified Master Technician, but diesels are a new breed for me as far as working on them. To be honest I've been a little lazy in trying to diagnose it myself and just thought I would look online to see if anyone has experienced it as well. I run high quality oil in my vehicles... Amsoil.
