Silverado15005.3

I have 2020 Silverado LT 5.3 and every morning when i start my truck and start driving, the truck jerks and the pressure goes around 70, after driving it for a few minutes it goes away and notice the oil pressure goes to 60, does anybody knows what's going on?

PCV Valve, the reason is cause one day my truck dashboard said low oil add oil, so when i check it had no oil at all, i added oil, and a few days had no oil again. i do have some code:

I have a Silverado 1500 5.3L 2020 and wanted to know if anyone know where is the pcv located, also do i need to replace the whole valve cover or just the pcv?