I have a 2005 chevy impala that won't go into park I took the face plate off the gear shift and I see this white piece that is broken on the left side of the shifter and I see that's what's preventing it from going into park I used a screw driver and was able to put it in park but I need to know the name of the white piece so I can replace it

Can you get a picture for us? That may help...