Where is the fuel pump located in a 2010 Dodge Caliber sxt?? When full, the gauge is only bout 3/4!

 

In the tank. Pump, sender and filter are all one unit. Luckily, it seems as though you can get to it by removing the back seat as opposed to dropping the tank.

 

Can you replace just the sending u it or a relay??

 

It is under the rear seat. Take out the rear bench seat and lift up the black plastic cover on the drivers side.

You can see the black plastic cover in the picture, it is just to the left of the drill.

You will need a breaker bar and a fuel pump ring tool, and maybe a rubber mallet to get the fuel pump out and back in.