Abstract: A rear pillar structure of a vehicle frame is provided for supporting a dual mode tailgate including a pillar member having a first leg and a second leg. The first leg extends generally vertically along a side wall of the vehicle frame which partially defines a load carrying bed. The second leg extends along a cross member connecting a pair of frame rails of the vehicle frame. A support member is mounted inside the first leg for reinforcing the first leg at a location at which the dual mode tailgate connects to the pillar.