A seat control mechanism for a seat frame has an interlock device that includes a lock plate slidably coupled to a seatback for movement between a locked and a released position. A stop bracket is coupled to a seat bottom and has a first end engageable with the lock plate in the locked position when the seatback is in a full-forward position and a second end engageable with the lock plate in the locked position when the seat back is in a fold-flat position. An actuator moves the lock plate from the locked to the released position to release the lock plate and permit movement of the seatback between the full-forward position and the fold-flat position. The lock plate is biased toward the locked position to engage the ends of the stop bracket to lock the seat back in either the full-forward or the fold-flat position after releasing the actuator.