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i dont know on that specific van but i can give u my general knowldege if you can get under there and see the gas tank there may be a valve you can open other than that i would take the gas line off and open the gas cap. I just did this as I was changing the fuel pump. There is no drain valve, but simply get under the car, disconnect the fillerneck hose where it enters the gas tank (it's attached with a hose clamp), then use a hose and a pump to drain the tank. It's easier to do it this way as you won't have to fight the kinks and bends in the filler neck when trying to get the hose in.

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โˆ™ 2009-01-04 17:53:24
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Q: How do you drain the gas tank on a 1992 Chevy G20 van?
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