A system may include first and second louvers and a drive system. The first louver may be movable between first and second positions. The second louver may also be movable between first and second positions. At least one of the first and second louvers may be positioned proximate an opening in a vehicle, such as a grille, to control airflow therethrough. The drive system may drive at least one of the first and second louvers between the first and second positions. The drive system may include a first member connected to the at least one of the first and second louvers, and a rotatable member having a first arcuate guide. The first arcuate guide may slidably engage the first member. The rotatable member may rotate to cause movement of the at least one of the first and second louvers.