GMC Yukon Chrome Trim Stained

All of the chrome trim on my 2016 Yukon Denali has a brownish stain.
It is heaviest on the grill, but is present on the side and rear chrome trim also.
I thought maybe it was bugs since I drive to Oklahoma, Georgia, and Florida a couple of times a year.
I posted on the Tahoe Yukon Forum and got mixed responses.
A few of the forum members thought it might be because of Colorado using mag chloride
Any recommendations how and if I can clean it up, or will I have to replace it?
Thanks

https://i.imgur.com/f85USD9.jpg

https://i.imgur.com/0bQ1TxI.jpg

small rock chips allowed mag chloride to get under the chrome... time for new trim. Your insurance might cover. It is road damage.

Does it come off with some metal polish and a little elbow grease?

Try some “NEVR DULL” polishing wadding. But most likely as Co.Os. Said the mag Chloride got under the plating on the plastic.

I had this happen on my 2006 Chevy Silverado.
The magnesium chloride stained the metal bumper and the plastic chrome trim on the grille.
I never found anything that would clean it up.
Even the metal bumper took stainless steel wool to have any effect.
Being Colorado the issue took care of itself when I had to replace the front due to body damage!
I learned to get that sticky ice melt chemical off the truck fast.

Richard