Where is a fuel gauge for when your tank is empty located on a 2006 Chrysler Pacifica

If I had to make a guess, I'd say your fuel gauge is getting stuck 1/2way. Do you have to fill the tank completely after it dies?
If it's yes, then the gauge needs to be replaced.

Fuel gauge drops to emptyChrysler Minivan

I do not own a pacifica but I do know quite a bit about cars and the digital read out gets in info from the gas gauge. so if the gas gauge is incorrect so will be the read out. I would start at the sending unit for the fuel gauge I bet you will find your problem there. The sending unit is most likely located in the gas tank

Make sure the tank has a good earth to the frame.

The most common cause of an inop fuel gauge is the fuel level sender inside the gas tank is defective, this causes the gauge to read empty or just move a little when filled in some cases depending on where the break in the resistor that the float moves is located.

2007 Chrysler Pacifica having intermittent fuel gauge problems. Goes from normal to dead/ low fuel. Has full tank. Also, check engine light is on

earth lead on gas tank loose /adrift,check fuses are clean and tight

you have 2 recalls
pcm update fuel pump replacement
fuel pump module replacement and pcm software

The problem will get worse, to the point that it will leave you stranded, out of gas. The solution is simple but most dealers don't catch it. They try fuel pumps, computer updates, sensors and the problem persists. You can fix this problem yourself and without spending a nickel. Want to know how I know? I've owned two Pacifica's and both have done this. Here's why: The Pacifica has a very unique and poorly designed fuel storage system. It uses what is refered to as a saddle tank. This is so they can use the same tank in both the all wheel drive and the front wheel drive versions. If you look underneath you will see it actually looks like two tanks. The driver side is the fill side and the passenger side is the delivery side. There are actually two fuel pumps, a main pump (pumps gas to the engine) and a equalization pump (pumps fuel from the the fill side to the delivery side of the saddle tank. The problem that you are experiencing carries with it several symptoms; running out of gas when the tank is half full, the gas gauge dropping suddenly at half full, and the inability to pump more gas into the tank without shaking the car back and forth and/or pumping very slowly. This is because of the way the two sending units inside the tank send their signals to the gas gauge and the fact that only when the fill side of the tank is 100% full, can some of the gas flow over the top of the hump to the delivery side tank. You can replace pumps all day long and most likely still have the problem. So what's the fix? It's simple. Underneath the vehicle, inline with the emissions lines going to the gas tank, about middle of the vehicle, there is a small plastic air inlet filter about the size of 50 cent piece mounted to the floor of the vehicle. It is responsible for venting the tanks pressure, allowing fuel to flow into the delivery side tank. It get's full of dirt and debris. Replace it a cost of about $3.50 or just blow it out with compressed air. If you don't want to do it yourself, help those dealers out - point them in the right direction, or else they will be running in circles trying to fix the problem. NOTE: this is only a problem on Pacifica's, not other vehicles. More info on this issue here; http://www.dodgeboard.com/forums/index.php?threads/my-crazy-gas-gauge.6381/

you are going to have to replace the sending unit for the gas gauge, it is located in the fuel tank.