Question about 1999 Chevrolet 3500

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Water in gas tank. how do i drop two tanks on 1999 chevy 3500 steak truck

I just purchased a 1999 chevy 3500 steak truck with 90K miles and no rust to cab. The truck had been sitting for approximately two years. I drove it home and it would not start again. Discovered it has water in the gas tank. How do I drop the gas tanks to remove water and I plan on replacing the fuel pump while the tank is down?

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Normally it's just a matter of removing filler tubes from side, disconnect fuel lines & electrical connections at fuel pump/sender, undo the 2 straps, & lower it down.

Posted on May 15, 2009


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Posted on Jan 02, 2017


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How to install gasoline filler neck 1998 chevy silverado

First disconnect your battery, drain your fuel tank, then support your fuel tank with a jack, then take the 3 bolts out on your filler neck by your gas door, then take the gas tank plastic shield off, then loosen the gas tank straps, then make sure you drop the tank a little to be able to reach up and loosen the hoses on the fill neck and then remove the hoses. Then install the new fill neck.
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But since you have everything opened up, take the time to look over everything before you put it back together, replace anything badly rusted or broken, no sense to have to do this all again.
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I have a 1998 Chevy Blazer. My gas gauge does not work properly. The gas gauge stay's on FULL at all times no matter how much gas is in it. When it get's low on fuel the gas gauge start's to jump back and...

It has 2 possible solutions 1) fuel sending unit is going bad which the tank has to be dropped to change, 2) you have a bad cluster panel. Hope this helps

Dec 18, 2013 | 1998 Chevrolet Blazer

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if it rusted out on the tank side you will have to change the tank, or if it not all the way down to the tank, see if you can cut and get a longer hose. Make sure it is fuel rated because the regular water hose is different from the fuel hose.

Sep 20, 2012 | 1999 Cadillac DeVille

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How to shitch and use the second tank of gas on a 99 chevy 3500 heavy duty work truck

This model truck has an automatic transfer pump.. there is no switch.

There has been a known problem with the control module on this setup.. causing the transfer pump to run too long when fuel gets low in the second tank.. called something along the lines of the 4 minute pump out.. they fixed it with modification to the replacement module.

I have known people that got stuck "out of fuel" even when the second tank was full... had to siphon from that tank to the front one... which is why I am aware of it.

There are threads discussing this issue.

Best of luck!

Apr 20, 2011 | 1999 Chevrolet 3500

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Lite poped on for gas filled it and now wont stay going

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