I'm trying to source the 3rd door seal that when shut it seals against the passenger door, the GM part number is 15739816. GM says it's discontinued and I looked at a few other websites but no luck. Anyone have an idea where I could fine one?

1997 Silverado 4x4 3-door

 

This website shows having it available - it also provides an updated part# 15737947 so if they don’t have it, try searching with the new number instead.

https://www.wholesalegmpartsonline.c.../15739816.html