very hard ti fill the tank fast

Asked by Feb 12, 2017 at 05:57 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

Hi when I go to gas up take very long , will not take fast fill up ???

2 Answers
7,155

answered 6 months ago

Check the Evap system. The vent tube might be kinked or restricted and can't get rid of back pressure when you're pumping fuel. It's a 3/4" or 1" rubber hose that's connected to the fuel tank neck right below where u pump fuel

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73,045

answered 6 months ago

Also the canister filter gets saturated if you top off the gas tank when filling it. Suppose to stop refilling on the first click of the pump nozzle.

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