Uggg how do I fix this, gala panel behind rear bumper rotted

[luberhill]

Ok so far this 2013 is mint, never winter driven it’s spotless underneath except...
I notice under the back side of the bumper area looks like plywood covers with galv metal that has corroded thru in a few spots
I call Winne and they said warranty is long gone... so how big an issue is this ??and how to repair

[luberhill]

Yea it’s just the thin galv around the bolts, I’m sealing it then painting the whole thing, it’s sold behind it

[mountainkowboy]

Post a picture of the issue, if it's out of sight stop the corrosion and spray it with undercoating. If there's rot it has to be fixed before anything else, or it will continue to eat the Moho.