A device for holding a vehicle sliding door at full-open position comprises a striker fixed to a vehicle body and a latch rotatably mounted on the sliding door. The latch has a U-shaped groove for engaging with the striker when the sliding door is fully opened. The latch is displaceable between a first position in which the U-shaped groove is disengaged with the striker and second position in which the U-shaped groove is engaged with the striker. A resilient member is disposed at a location between the latch and the sliding door for holding the latch in either one of the first position and the second position by resilient force thereof. The resilient member is always in contact with the latch directly.