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Q:

Truck is super slow to fuel up? Do you know of any known problems or fixes? on 2009 GMC Sierra 2500 HD

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Blows back fuel when filling up. Have to fill it SUPER slow or in short bursts. Very frustrating. Thanks.
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There's a 8 page document from GM on this problem. What i find very interesting is that it's not a TSB. Contact me at autoknowhow@gmail.com