An anti-chucking device (14) for a tailgate assembly (12) for a vehicle (10), includes a bracket member (36) and a striker member (38). The striker member (38) engages the bracket member (36) and prevents the tailgate assembly (12) from moving in a lateral direction on the vehicle (10) when the tailgate assembly (12) is moved to an open position and a closed position. The bracket member (36) includes a first pair of tabs (50) and a second pair of tabs (52). The first pair of tabs (50) extends from the second pair of tabs (52) by a predetermined angle. The first pair of tabs (50) defines a first slot (60), and the second pair of tabs (52) defines a second slot (62). The striker member (38) pivots between the first slot (60) and the second slot (62), with the tailgate assembly (12) moving between open and closed positions.