fuel pump sending unit on 2000 Chevrolet Blazer

This is a one piece unit that fits in the gas tank. Can you please talk me through the replacement of the unit?

You will need to drain as much fuel is possible into a suitable container, Raise the vehicle on a lift. remove the filler tube and breather hose from tank, remove mounting straps and carefully lower tank a foor or two in order to reach above the tank and disconnect the fuel lines and emissions hoses. after it is disconnected you can lower the tank and replace the unit. Revearse the procedure to install.