At a glance
What can fail
The plastic casing around the fuel pump terminal on the fuel-sending unit can crack, allowing the terminal strip to corrode in certain environmental conditions.
What the fix does
Dealers will replace the fuel-sending unit in specified states, or inspect for corrosion and replace if found, or apply sealant to prevent future corrosion in other states.
Summarized — see the official notice for exact wording, dates, and contacts.