The non-structural stainless steel panel is affixed to the pickup using fasteners and adhesive that is “susceptible to environmental embrittlement.” An investigation into the issue found that ...

Worse, if those stainless steel panels actually do get damaged, it's harder to hide the damage with a quick paint job (since there's no paint), meaning a repair needs to be held to a higher standard.

"The cant rail assembly is affixed to the vehicle with fasteners. On affected vehicles, the cant rail stainless steel panel may delaminate at the adhesive joint, which may cause the panel to ...

Material for these metal panels ranges from aluminum to e-coated steel to stainless steel. Wire mesh infill is usually requested due to a good combination of clear sightlines and durability.