[j cAT]

if you have an airtex pump that lasted 40,ooomi you are very lucky.

on the fuel pressure guage. if you hit the bottom of the tank directly under the fuel pump and the gauge starts jumping or then reads the correct amount , then this would be the fuel pump.

I would replace this anyway and install a delphi or ac delco fuel pump.

it is all in one. pump/fuel sender/evap pressure sender.

with the truck bed , remove the bed. remove bolts [8] then lift rear bed portion 1.5inches. then unbolt 6 bumper bolts and remove bumper. disconnect fuel filller studs and the rear lighting connectors . slide the bed back 2 ft. not all that hard a one man job.