so lets say i was in park

i press my brakes to shift to reverse...

now that i am in reverse, i let go of the breaks so i can go reverse, and just right after i let go of my brakes...there's that "click" sound...its more of like some clutch sound....i think its from the outside..but not sure where...

and when i'm done reversing...i shift to drive, and right before i let go of my breaks to drive foward...thre's the sound again...