Following up on this with my findings.
There are actually several liftgates made by GM:
one for the Tahoe/Suburban/Yukon/Yukon XL that has a fixed upper (where the logo is):
and one for the denali that has holes in the same area:
My solution to blacking out (color matching) the chrome strip on the denali was to go ahead and order #3 in the photo above (part 22834033) and have it prepped/painted and then take the vehicle to the dealership and have the strip swapped out.
Really annoyed that GM started adding this chrome strip "applique" to the liftgates - I believe they started doing it in the late model versions of the 07-14 body styles... thought it was a little much there especially. I like it clean...
If I'm wrong about any of the above please lmk.
full schematic photo:
backside of 22834033 showing notches:
hope this helps someone out...