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mr48chev · 05-26-2010, 03:45 PM

According to my son who has a 2000 GMC with a 5.3 they don't get much for gas mileage. He has never come out and said what he gets but from what I understand it isn't good and that truck is stone stock right down to the radio and factory wheels.

05-26-2010, 03:45 PM	#15
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,367	Re: 5.3 vortec gas mileage question According to my son who has a 2000 GMC with a 5.3 they don't get much for gas mileage. He has never come out and said what he gets but from what I understand it isn't good and that truck is stone stock right down to the radio and factory wheels.