pumping in fuel, slow & automatically shuts off the pump

Sounds like your fuel level sensor is defective, which is not uncommon. Have the Body Control Module and Engine Computer scanned.

I actually have the exact same issue on my 2006 Pacifica. Here is what I found out. The short and skinny is that you probably have one of the 2 fuel pumps going bad. One fuel pump controls the levels of gas between the two bladders. The other controls the fuel flow to the engine. if the first goes out, you will get no gas from the passenger side tank to the driver side tank. When you fill up, the vent is right between the 2 and as it gets to where the overflow is and it tries to spill into the other tank, it thinks it's full and it shuts off the nozzle. A secondary issue you will have from this, is when you are at a full tank of gas, the gauge will work fine. as you get close to 1/2 tank it will suddenly spike to empty. Then the computer will tell you that you have between 25 and 15 miles to go before you are out of gas. again it is because you are only using the gas from the left tank. Take heed, If this happens, you WILL run out of gas after only using 1/2 a tank and the motor will shut off while driving. Using the trip won't help. you will get between 200 and 250 miles to a tank of gas, which is only about 10 gallons. This is only half a tank though. Anyway, you have to have the fuel pumps replaced and have the BCM reprogramed. see this link for details. http://www.justanswer.com/chrysler/6vo21-chrysler-pacifica-having-dropping-gas-gauge-slow.html