A decklid assembly includes a striker that movably engages a vehicle body structure. The striker includes first and second opposed surfaces that face each other. The decklid assembly includes a decklid having a latch that releasably engages the striker. A cam is rotatably mounted to the body structure. The cam is disposed between the opposed surfaces of the striker, such that rotation of the cam in first and second directions causes the cam to engage the first and second opposed surfaces, respectively, thereby shifting the striker up and down, respectively.