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Old July 22nd, 2015, 10:59 AM
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Replacing In-Tank Fuel Pump with External

Old April 19th, 2010, 2:36 PM
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Default Replacing In-Tank Fuel Pump with External

I thought I saw a write up on how to switch from the in-tank fuel pump to an external pump. Anyone know how to find that info?

Any one know of a product or kit to use in place of the in-tank pump.

On my 3rd one and not happy to do it again.
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Old April 19th, 2010, 3:45 PM
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I dont have any instructions but if you have to put one in the tank. I would sudjest getting the proper one from the gm dealer not a aftermarket one. This is one of the only parts i would buy from the dealer.
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Old April 19th, 2010, 3:57 PM
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same thing get a ac delco and you should be fine. I have found after market ones dont last long. you could use a inline marine fuel pump.
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Old April 19th, 2010, 5:03 PM
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I did get an AC Delco - the first time, second time and 3rd time. All lasted about 80-90,000 mile.
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Old April 19th, 2010, 11:36 PM
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That sucks, but it seems that on the 96 - 99 thats about all you get out of them. most of them I have replaced and seen replaced was in the miles. not sure why on the 350 and 454 for those years. the 5.3L seem to last longer.
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Old April 20th, 2010, 8:18 AM
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DId you make sure to replace the sock mesh filter on it too? It's weird that you had to replace so many delcos.
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Old April 23rd, 2010, 6:29 PM
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Reasons behind having to replace theses pumps is the same reason y the 89-96 f150 had some many problems. the pump in the tank is lubricated by the fuel in the tank when the tank is run below a 1/4 then the pump is lubricated or cooled properly causing the pump to heat up. over time this can cause premature failure.
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Old May 3rd, 2010, 1:15 AM
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Default Noticed the Pump sits high

In my BMW the in-tank pump sits in a sump and it seems to keep the pump covered with fuel even when the guage reads almost empty.

The pump in the Suburban seems to sit high- at least 6 inches to the top of the pump up from the bottom, has no sump and only has a baffle in front of it and at one side. I would agree that after 1/4 tank the pump is getting prematurely exposed.

Since I run 500 + mile trips and avoid fueling up until I get to the end because of the higher prices along the interstate, I am routinely running 100- 150 miles at least with less than 1/4 tank.

What is the sense of having 40 galons if you can only use 30 before you need to fuel up or run the risk of taking life off the pump.

I know I read a write up on how to convert to an external pump and there was a product name that had a kit for the whole conversion. When I find it I'll share it here.
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Old May 3rd, 2010, 2:01 PM
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I am with you...I replaced my Fuel pump (had the dealership replace it with a Delco) 15 months agao (9,500 miles ago) and mine is already acting stupid. I am tarting to think this is going to be my last GM product. The Hoe has given me more problems then any other vehicle I have ever owned...even my 89 Jag had less problems!
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Old July 4th, 2010, 10:34 PM
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8 months of running on empty wiped out my dealer installed AC Delco. I'm not happy and I'm considering whether to cut a hole in the floor or go with an inline pump.

If I go with the inline, do I need to take the existing dead one out of the tank?
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