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Should be a 3116 by the year. What does the diagnostic port look like on the driver's side kick panel? The A0 trucks have a 54 pin analog diagnostic port. The A1+ trucks have a 9 pin J1939 digital diagnostic port.
All of them say exactly what they are on the valve cover. All options are inline 6 cylinder engines. 3116 is a mechanical engine with no computer. The other two are computer controlled.
All of them say exactly what they are on the valve cover. All options are inline 6 cylinder engines. 3116 is a mechanical engine with no computer. The other two are computer controlled.