NHTSA Complaint #11677037 — 2016 CHEVROLET SILVERADO 1500

65,300 miles on my 2016 Chevrolet Silverado with the 5.3 liter engine. Engine lifter and camshaft failure due to the AFM/DFM system. Now my truck is being worked on as we speak by a performance shop who says these seem to be a normal occurrence. Some with more miles and some with less millage. After doing some research online, this is a very common problem. And on TikTok, Instagram, and Facebook there is a lot of people having same issues. My question is why isn't this being looked into. I've asked other mechanics, speed shops, and including a Chevrolet Dealer mechanic and he said yes that AFM/DFM is a major problem. But no recall from GM. Please help. This is not a cheap repair, and It's definitely unfair to many others that will have these same issues.