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Hi, I need help diagnosing my 2003 Suburban 2500 4x4 6.0L. When trying to pump gas, the gas backs up and out of the fill pipe. Took the Vapor purge valve off and it seems open with no blockage. My valve does not have any wires to it only the vent pipe.
I looked online and under the vehicle but cannot find out the location of the charcoal canister if it even has one.
Any assistance would be appreciated.
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