I am at 245,000 on my 5.3L…
I am at 245,000 on my 5.3L 2012. The whole top end of the engine was redone at 177,000 when the AFM system broke a lifter, and the original transmission failed at 201,000. The CD player also died of old age and I haven't swapped in the replacement yet. All that said, with a good mechanic and the willingness to replace things as you go, you can keep one on the road much easier than one of the new ones.