Yes. The supply pump is below the filterhead, way down on the side of the block.
There is a little lever on the side of the pump that you pull outward and then up to pump.
If it just flips up uselessly, bump the engine around slightly until the supply pump gets off the cam lobe, and then the lever will get resistance.
It does't pump a whole lot per stroke, so it'll take a bit to fill a filter. Good news is, it's 1000% easier than the 2nd gen trucks to operate. You will probably need to stand on something to reach down to it, though.