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I need to drain the gas tank to replace the fuel pump is…

Customer Question
I need to drain...

I need to drain the gas tank to replace the fuel pump is there an anti siphoning device

Mechanic's Assistant: Okay, I'll connect you to the mechanic to go over that information regarding your Chevy. Before I do, is there anything else you want him to know?

Yes it is a 2000 suburban

Submitted: 6 months ago.Category: Chevy
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Answered in 1 minute by:
12/28/2017
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 6 months ago
AMEDEE
AMEDEE, CHEVY TECHNICIAN
Category: Chevy
Satisfied Customers: 28,162
Experience: ASE certified tech ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
Verified

Hello and welcome!

Thank you for your question. My name isCustomerand I will be happy to assist you today. I am reviewing the details now.

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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 6 months ago

Does the truck start and run? Does the fuel pump run?

If so, you can jumper the fuel pump relay to have the fuel pump run constantly and run a line going to a tank or bucket to hold the fuel.

If the pump does not run, then you will need to lower the fuel tank and remove the fuel pump assembly to gain access to the fuel in the tank to drain the fuel. However, at that point, you might as well just install the new fuel pump assembly and put the tank back in place rather than emptying the fuel in the tank.

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Customer reply replied 6 months ago
can i siphon the gas tank
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 6 months ago

From where? Through the filler neck? No, there is likely a check ball inside the filler neck to prevent this

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Customer reply replied 6 months ago
or no can i siphon the gas tank
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 6 months ago

From where? Through the filler neck?

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Customer reply replied 6 months ago
from where i put the gas in
Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 6 months ago

Got it. Thank you for clearing that up.

No, you cannot siphon from there.

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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 6 months ago

But if you remove the filler neck, you can likely siphon from the tank where the filler neck goes into the tank.

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Chevy Mechanic: AMEDEE, CHEVY TECHNICIAN replied 6 months ago

Do you have any further question sir?

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