If you check your Warranty Guide you will find that the warranty on aluminum panels is 5 years, unlimited mileage. BTW, it's not rust but corrosion.
Peter
There is a major flaw in the theory well multiple but this is the one I will focused on.
I went through the same deal with my 2018 Hood Corrosion. It went on for front fender damage. The hood was discovered and I asked them to take care of it while it was in the shop and not require a second visit. Hood corrosion was on the hood lip at the leading edge about where the P and the L of the hood lettering are.
Damage was instance and hood was warranty.
The problem is two fold. 1. The Clearbra was NOT covered because it was considered a aftermarket accessory even though dealer installed. Enough about that but be prepared if you have clearbra be prepared to pay at least for hood. In my case the fender. LearBea was covered with the insurance deductible but I had to pay $225 for the hood ClearBra. My argument is if the hood was properly prepared to avoid the corrosion the CleRBra would have not needed to be removed in the first place.
Here is the second part and even more of the problem which is driving customers away.
The correction for the hood corrosion and probably other panels but hood for now. The correction if corrosion is found. Is to send a entirely new hood from the factory with the corrosion preventative coating applied and ready to prime and paint.
Yes you heard me correctly, they send the panel that has a corrosion preventative coating applied and ready to prime and paint.
Let’s break that down for a minute and see how crazy this is..
The hood needs to be stamped, coating applied,dried, shipped to dealer or body shop, unpacked....( hoping that there is no shipping damage)......prepped, primed and painted.....painted blend to match not just painted and installed on the vehicle. Dried, etc.....
The hood is sent as a individual component. And the logic is the same coating could be applied at the initial installation to avoid the warranty claims I. The first place.
This correction method appears to go back quite a ways and you would think that a vehicle built in Chicago they would know that the preventative compound be applied to prevent further claims.
A typical example of cost/benefit analysts. For the ones that are caught by the customer think how many get by. The generalidea is to hope that the corrosion caught AFTER the corrosion/rust through warranty has expired either time or miles.
You need to be like a bulldog with the dealer because they will try every trick in the book to get out of a warranty claim. There should be no reason for there to be paint bubbling and corrosion even at a nine year old vehicle with no underlying conditions .....untreated scratch or chip etc....
Good Luck!