I put 60 dollars worth of gas in my 2000 suburban but my gas gauge reads empty.

copy and paste the link below.your pump is still working,the sender has just went bad.if you want to replace the assembly,see rockauto.com for best price.there are a few different ones that are listed for your truck! https://repairpal.com/fuel-level-sensor-failure-412#

It is most likely the fuel level sending unit. It is recommended on higher mileage vehicles to go ahead and replace the fuel pump assembly.