At a glance
What can fail
A contaminated two-way valve filter in the emission control system can create excessive vacuum in the fuel tank during purge cycles, causing the tank to crack and potentially leak gasoline.
What the fix does
Dealers will check your fuel tank for cracks and replace it if needed. They will also install a new air intake system to prevent future contamination.
Summarized — see the official notice for exact wording, dates, and contacts.