The passenger lifters on my 6.2 had to be replaced at 102,000 miles. Luckily Chevy only charged labor at $1,100.00 even though I was 2,000 miles over the warranty.
Ticking again and shop said cam needs replaced. I am going after market cam and lifters with AFM delete. Just waiting for the shop to receive the parts. $5,800.00 for cam and E85 tune. Everybody else was quoting 5k for stock parts and install.
With only 77,000 miles I would go with the mild cam and AFM delete. Sure cheaper than buying an overpriced new truck at this time.