[Flatrater]

Sorry Tman there is no fix for your problem!! It's called fuel slosh, its gas moving around the tank and when the tank is low enough it moves away from the pump starving the pump of gas.

I worked on one Lesabre years ago the only thing that got the owner out of my hair was to put a slosh module or buffer in the sender wiring. All it did was make the guage needle move slower and I also took the sender out bent the arm alittle to make the tank read less than what was in the tank. It only fooled the owner into keeping more gas in the tank which fixed his problem.