Read more: 2007 GMC Sierra SLT test drive and review
Yellow E85 fuelcap
From Christine & Scott Gable, former About.com Guides
Whenever you see this bright yellow gascap on a GM automobile, it's a flex-fuel vehicle (FFV) capable of burning E85 fuel. Fill up this GMC Sierra 1500 SLT Flex-fuel with 26-gallons of gasoline, E85, or any combination thereof.
photo © Scott Gable11 of 16
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