General Motors and especially their Chevrolet brand have made E85 Flex fuel vehicles since the introduction of the Chevy S10 in 2001. Chevy continues to build E85 Cars trucks and SUV's in record numbers.. To see if your vehicle on this list is E85 capable check your Owners manual , your gas cap and the 8th Character of your VIN (Vehicle Identification Number) . The 8th Character on the Silverado for example must be the letter "Z" according to Chevrolet . You can find the E85 capable VIN for each vehicle by selecting your vehicle from the list below. Also all 2006 GM models should have yellow Gas caps.