Abstract: A vehicle frame assembly has a first frame member defining a first frame member axis and a slot and having a first frame member connection portion adjacent the slot. A second frame member defining a second frame member axis has a projection and a second frame member connection portion adjacent thereto. The projection is received in the slot. The first frame member connection portion is connected to the second frame member connection portion to form a connection region in which the second frame member axis is disposed at a non-zero angle to the first frame member axis in the connection region. The method of assembling the frame includes inserting the projection into the slot, contacting the connection portions to each other to form the connection region with the members being positioned for connection with their axes disposed at a non-zero angle to each other, and connecting the connection portions.