Where is fuel pump located? on 2007 Hummer H3

Is the entry to my fuel pump under the back rear seat?
Can I change it from under the back drivers seat?
There is something under there but not sure what it is.
I was told that I did not have to drop the gas tank.

Asked by for the 2007 Hummer H3
if not dropping the tank...should have access under rear compartment
Where is fuel pump located?