At a glance
What can fail
In extreme cold, ice can form in the throttle body during extended highway driving. This may cause the throttle plate to stick in the cruising position even after you release the accelerator or turn off cruise control.
What the fix does
The air intake duct and valve assembly will be replaced to prevent ice buildup in the throttle body.
Summarized — see the official notice for exact wording, dates, and contacts.