Greetings from Mikey at Just Answer!
This truck has a remote mounted oil filter, its not on the engine.
If you follow the oil cooler lines you will find the oil filter mounted in one of two places.
Under the truck right behind the front bumper hiding behind a plastic panel maked "oil filter"
or
Under the hood on the body behind the left headlamp.
ASE Certified Master Technician
25yrs experience auto and truck emissions and repair.