Just to add my thoughts, all of our family GM vehicles use Mobil 1 5W-30 and either NAPA Platinum or NAPA Gold, (made by WIX) oil filters.
Sometimes the Platinum filter is not available for certain engines, so the Gold filter is used.
Both have served me well for many years.
Our oil change interval is, or is close to, each even 5K mark on the vehicle's odometer.
This makes it easy to see at a glance where I am in terms of an oil change for any of our vehicles.
I do not go by the oil life monitor and I simply reset it at each oil change to keep the message off of the dash.
Generally, I have 10-15% oil life left according to the OLM at each oil change.
My 2003 Avalanche has 272K miles, my 2004 EXT has 236K miles and our GMC Acadia has 152K miles.
I see no good reason to ever switch so-called "weights" of the oil I use.
No where have I read in an owner's manual that a so-called "heavier" weight oil is recommended simply due to a vehicles age.
I would change to a different viscosity oil if the climate I was consistently driving in was to show that a different viscosity was recommend in the owner's manual.
Here is a link to your truck's filter selections at NAPA.
NAPA is happy to ship to you if you do not have a local store.
I usually order several of each filter I need for each of our GM vehicles, just to have them in stock in the garage.