I haven't found any back door specific ones. I was wondering if I could cut the front ones to fit. Has anyone tried it? Or have other suggestions?
The OP can always contact GM to verify the material, but I very much doubt GM is misrepresenting the stainless steel.They felt like plastic to me, I paid $75 for mine and IMHO that was too much for what you get.
If you install them along the edge, instead of following the instructions, they provide decent protection. None would provide perfect protection unless they wrapped around.They don't protect the area that most likely will take the brunt of shoe scuffs.