Cranks, no start, until u bang on fuel tank, when fuel 1/2 tank or less

[sbc-j9]

My wife has a 2012 Sequoia that when there is less than 1/4 tank (now 1/2 tank) of fuel, it will crank but not start until you crawl under the vehicle and bang on the bottom of the fuel tank…..

No codes. I have a new fuel pump for it but have not installed it yet…