That's a sore subject. It's a 2014. At 103,000 a lifter on number 7 rotated in its bore and ate a chunk out of the cam. Of course it was 3k miles out of warranty. Luckily I have a good dealer and they got GM to eat half the cost but I was still out $3,800 bucks. I am going to run it until the motor warranty that came with the new long block runs out (203,000) and this truck is history. That should be sometime around January. I think I am going to a 3/4 ton diesel next.
Other than that issue it's been a good truck. It spends quite a bit of time idling and at interstate speed with no real issues other than a total motor meltdown.
I can say definitively that all the catch can stuff is just hoopla. At 103,000 miles the valves looked pristine and the head looked almost show room new. I got to see all of them first hand.
Sent from my iPhone using Tapatalk