Part Number for 07up Escalde Third Brake Light Housing?

[Playa70]

I'm wanting to do the Escalade third brake light housing on my Tahoe but can't find anything worth while except pictures of it. Anyone here know the part number or where to find one? Thanks in advance

 

[Diesel]

Applique (housing) #15847949 $102.38
Light #15847948 $131.59
GM Parts Direct