6.2L - Debris Found in Engine Oil

[jbooose]

I got my oil analysis results back and everything came back perfectly normal. No values were out of whack or off.

I also emailed the service manager about the debris found in the oil and they stated they had never seen something like that before. They offered to perform the next oil change and have me present to see if anything is found again. I have saved the filter from the last oil change as well as the debris that was collected in the drain pan.

I have not yet spoken to them about the recently announced recall of the L87 and how they plan to handle that. I am still a couple of thousand miles off the next oil change so it may be a bit longer until I know my next step.

 

[Actifenpleinair]

Agree with the others on both accounts: 1) My experience with my last two Tahoes has been the oil consumption stops (or drastically decreases) when going to a 30 weight oil; and, 2) I would be documenting the heck out of the pieces you are finding in your oil and would make sure the dealership finds them too and takes appropriate action. I know some have said some dealerships just want to get the vehicle through warranty and that's true, but I've also come across dealerships that are happy to have warranty work to do that they can bill GM for.

I just did some unplanned cam position sensor, water pump, timing cover, oil pump, timing gear and chain work on my 278,000 mile 6.2 L non AFM Yukon when I tried to simply pull out the Cam PS, but ended with a drilled, fragged, multiple pieces camshaft position sensor.
Those plastic colors and cylinder like shapes definitely look like sensor pieces. Not so much like timing chain guide which is lighter and squarer. I certainly think the crankshaft position sensor and/or camshaft position sensors looked exactly like the pieces that you have there. I think there's something wrong inside your motor. You or the dealer could easily pull the camshaft sensor (at least on the gen 4) and see if it has all of its parts still attached. Unless someone was throwing walnut or Pecan shells into your oil...