I don't think so; this just appears to be an update to alignment specs if the vehicle requires it i.e. engine removal etc
After "reading between the lines", I'm going to guess that alignment specs change based on the wheel/tire size option (RPO). An excerpt from the Techlink page I originally posted:Check the alignment specifications for these models in the appropriate Service Information against the alignment machine specifications before performing an alignment. Be sure to take into account all related option content on the vehicle, including tire and suspension RPOs.
Hypothetically speaking, maybe they were finding the 20" wheel option package was wearing out tires prematurely, when paired with the trailering package.