When you see GM products equipped with a yellow gas cap like this you'll know the vehicle can run on gasoline or gasoline/ethanol mix up to E85.
Read the Review 2007 Chevy Silverado 1500 Extended Cab Test Drive
Gas Cap Showing Silverado's Flex Fuel Compatibility
Pictures of the 2007 Chevy Silverado Extended Cab Truck
Silverado's Flex Fuel Gas Cap
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