Reverse Lights in Park

[deadbeat]

1997 Chevy 1500 ccsb, every since I have owned the truck the reverse lights are on in park. No matter how much you wiggle the shifter in reverse they do not come on there. I had a tranny put in a while back and the shop said they replaced the NSS and it didn't change anything and had no suggestions for me. I would really like to have back up lights, got any ideas? I pulled this part http://www.gmpartsgiant.com/parts/gm...-26060737.html and it made no difference.

 

[deadbeat]

Forgot to mention it starts fine in park and neutral.

 

[deadbeat]

Can anyone confirm on a 1997 that there is a nub on inside the column by the shifter?