Dragon40

Hi there, new to the forum. Looking for information if someone already deal with this problems. 2014 Silverado 5.3 I changed spark plugs, cables, all the injectors. And after that the truck worked well for 2 days after that I started getting code for misfire cilynder 4, the stabilitrack light, engine power reduce, I know I need to remove the valve cover and check for lifters, but I just want to know if someone already deal with this and what was the fix for this. I like the truck but it just sucks to many issues with this engines. Thanks.