Need part number and were to buy it
 

My weather stripping around my body between the door is toast.
What is this Gm part number.The rubber has given up letting water run in
down the molding on to the floor board.

They usually call it door w'strip and I've seen it run about $70 a side for OEM online. I don't know if you need left or right side but here ya go.
http://www.gmpartsonline.net/parts/2...6%20COMPONENTS

I need the passenger side ,that would be the right side correct.

Yea best to use the OEM style cuz of where they click into place with the clips on that are already on your current weatherstripping instead of using glue to hold them in place making figment second to none and greatly reduces wind noise and the struggle to close the door fully with oversized ones from Some off brand weatherstripping

Yes passenger is the right side :)