Learned a lot today about rear bumpers. Specifically interchangeability of the SUV bumpers. I am very disappointed with the rear denali bumper I bought off a FB marketplace sale. Its my fault, I should have inspected it more closely, but 0-degree temps I gave it a rough look, and loaded it into my truck. The inner supports were severely rotted.
Went back to LMC trying to locate the inner pieces. After further research I found out the bottom hitch/step support is identical on all bumpers. But the issue is the inner shell was the rotted off part. Inspecting my bumper closer I couldn't help but realize how similar they were.
I proceeded to remove the denail bumper cover and exposed what seemed to be a GM Z71 package painted steel bumper.
I removed the pastic trim pieces from my chrome dented up bumper and slid that into the denali cover, amazingly everything lines up!!! This saves me from needing the $130 steel bumper to insert.