I've got a better question, why is this question in the Chevy venture forum ?
You have to drop the fuel tank to access the pump.
how do i replace the fuel pump and the tools i will need
see "how too replace water pump on 2002 Trailblazer"
about 200-$300
Pull the gas tank down and you will see where the pump goes into the tank.
Remove fuel tank for access
3 to 4 hundred dollars
We need to know which engine you have, it makes a difference.
YOU DON'T!!! I have a 2003 avalanche and I had to replace the water pump you can't replace the seals!!! It's a defect in the 2001 to 2003 avalanche the seals fail.
Replace water pump for an 1986 Chevy Nova?
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Yes you do , It is inside the fuel tank