[gmc684x4]

an inline filter i use a metal canister ones i dislike the plastic ones
Look under the truck for a filter many ppl have put one before the fuel pump


You can remove the sending unit check the pickup sock is clean and look inside the tank with a flashlight To look at and for sludge in the tank and use a bucket to put the sender unit in

I would remove the seat put some plastic down to keep any spilt gas of the carpet or underlay

You can use a long stick ex yardstick to stick in the tank for a dip reading to see if there is gas in the tank in case the sending unit or guage failed and stuck on a reading