Supercruise requires a data subscription plan.
even states it on the window sticker
Will someone need to separately purchase a plan within the first 3 years of ownership?
No, because they are prepaying for the monthly subscription when the vehicle is purchased.
The first few months of the 2023s had the 3yr subscription listed out as a (mandatory) option (Denali it was $905 - lesser trims it was ~$1500). After the backlash of forcing the consumer to pay for the onstar subscription GM upped the base price on the Denalis and included the 3yr plan as standard equipment vs itemizing it out separately.
During the transition there are even window stickers that have the 3yr plan listed as standard equipment but it's also listed and charged separately as an option
window sticker with supercruise and data plan itemized out (although it's listed as standard equipment)
more recent build with supercruise and the base price is increased by the $905 that was listed out separately
even states it on the window sticker
OnStar Super Cruise Hands-Free Driving | OnStar Services
<p>OnStar Super Cruise Hands-Free Driving brings you an innovative set of features that will change the way you commute. Learn about OnStar Super Cruise today.</p>
www.onstar.com
Will someone need to separately purchase a plan within the first 3 years of ownership?
No, because they are prepaying for the monthly subscription when the vehicle is purchased.
The first few months of the 2023s had the 3yr subscription listed out as a (mandatory) option (Denali it was $905 - lesser trims it was ~$1500). After the backlash of forcing the consumer to pay for the onstar subscription GM upped the base price on the Denalis and included the 3yr plan as standard equipment vs itemizing it out separately.
During the transition there are even window stickers that have the 3yr plan listed as standard equipment but it's also listed and charged separately as an option
window sticker with supercruise and data plan itemized out (although it's listed as standard equipment)
more recent build with supercruise and the base price is increased by the $905 that was listed out separately