You will have to check the power going to the pump.
On my Aztek (same chassis as Montana.... and venture, just not sure on the year)... there is a wire harness connector under the driver's area You get to it from the bottom. If you have this, disconnect and look over the connection. This is an area of corrosion. I had to bypass mine.
It is called a C305 in the Aztek world. http://www.aztekfanclub.com...dex.php?topic=6235.0
BTW... this connector houses things like the fuel pump power, evap wires and abs wires.
found this: http://www.justanswer.com/c...anged-fuel-pump.html
[This message has been edited by jaskispyder (edited 04-08-2013).]