Two places on an EZ-GO to check. If it is 2004 or older, the serial number plate is located in the passenger side "glovebox". If the cart is 2005 or newer, lift the seat and then lift the lid to the access cover over the batteries. There should be a decal on the upper frame crossmember that will give you the manufacturing info including the date. If it has the ID plate in the glovebox, the year of the cart is the las two digits of the manufacturers code.