US mud flaps and Rust!
I have the first Chevy version they made of the NV200, "Chevy express city", almost identical.
I used the full mud kit of mud flaps, heavy duty snow floor mats( clipped right in), plastic side molding, and rear bumper protector sold by Nissan . Whole package was about $130 US a couple of years ago.
Great value. Chevy in their wisdom did not offer them as an option! Duh!
The one thing I have noticed that needs attention is the sill in front of the doors get full of leaves. I think they come from the engine compartment over the wheel well. This could be a major rust issue. I've vacuumed then out but need to come up with a better plan they keep coming back as I can't get them all out.