How do you get to the gas tank in a '97 Buick Le Sabre?

My buick gas tank gauge is always showing full, I have been told it might be the flotter in the gas tank that is messed up. How do I get to the tank? Please help. Thanks|||its probably in the same place mine is.i have a 88 olds.run the back end up on a pair of ramps and craw under it and theres 2 straps,you have to take off.lower the tank with a jack and take all connectiongs off and the gas nozzle and lower the tank.|||You don't if you are a novice, working with fuel tanks is highly dangerous. It is best to take it to a shop. The tank has to be dropped to remove the sending unit.|||The tank is under the trunk,you gonna have to drop whole gas tank to change the floater