The very last scene when Lorenzo comes to Sonny's wake. He thanks Sonny for getting C out of the car and saving his life and admits he never really hated him, he just resented him for making C grow up too fast. He then prays for mercy on his soul.
After Sonny wrongfully accuses C of being a part of a plot to assassinate him, he stops C from going along with his punk friends to attack the black neighborhood, thereby saving him from burning to death when the plot goes wrong.
In a change of pace from films of this type where the mob takes kids under their wing as a recruiting tool, Sonny makes it clear to everyone that he does NOT want C to become a gangster like him and he would be better off getting an education and living an honest life.
Jane passing the test and opening the car door for C.