[Planohummer]

The horror stories center around a lift pump that wasn't working and thus wouldn't re-prime the filter after replaced(truck will run without pump working, just won't have full power under load).
EZ way to check the lift pump:
open pitcock driver side(has a rollpin through brass tee), turn on key and see if fuel runs out fuel line hanging down. If not, don't replace filter until lift pump is replaced.
After you replace the filter, re-prime by opening same pitcock, turn key to on, and letting air out, then opening plastic knob on filter housing slightly-tighten when straight fuel comes out.