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How to see if Fuel pump 1989 GMC suburban 4x4 is bad?

Updated: 8/17/2019
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15y ago

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disconnect the fuel line from the fuel filter and turn the ignition to just before the ruck would start, this should activate the fuel pump and fuel should flow from the fuel line.

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15y ago
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Q: How to see if Fuel pump 1989 GMC suburban 4x4 is bad?
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