Changed the oil today in the wife's 2014 Avalanche and on my 07 Yukon.
Not sure how many miles the Yukon has on the last oil change, probably around 2500 ish.
If you remember back in post #31 all the metal chunks that were in the drain pan, this engine should have been dead in a few weeks. It's still running decent with good oil pressure.
When I changed oil this time there were chunks of copper and aluminum in the pan, but nowhere near as much as the first oil change I did. This being the second and I think the chunks are what did not come out the first oil change.
It does have what I think is 1 piston slapping when cold and will make noise slowly getting quieter until the engine is up to full temp.
I don't think it is an exhaust leak but there is a slight chance as it does have a couple broken bolts. Just not sure.
Anyway, just an update for the thread. Nothing special.