OnStar One, 3 years

only in: Blazer EV, not the Police Package; the 2025 guide reads 3 Years of OnStar Digital Services

LT, RS: O; included with and only available with UKL; requires UE1

the 2025 guide prints "3 Years of Super Cruise and Digital Services by OnStar"; 2025: A in LT 2, RS (included with and only available with UKL); not offered in LT 1; 2026–2027: A in LT 2, RS (included with and only available with UKL; requires UE1); not offered in LT 1

the 2025 guide prints "3 Years of OnStar Digital Services"; 2025: S in 2SP, 3SP; A in 3LT; not offered in 2WT, 5WT, 8WT; 2026: S in 4LT, 3TR, 2SP, 3SP; A in 3LT, 2TR; not offered in 4WT, 5WT, 8WT, 2LT; 2027: S in 3TR; A in 3LT, 2TR; not offered in 4WT, 5WT, 8WT, 2LT; 2025–2026: included and only available with UKL; requires UE1; 2027: included and only available with UKL; requires UE1

the 2025 list reads "3 Years of OnStar Digital Services";

2027: LT, RST, Premier, High Country: O; the 2025 guide reads 3 years of OnStar Digital Services; the 2026 and 2027 guides read 3 years OnStar One

2027: LT, RST, Premier, High Country: O; the 2025 guide reads 3 years of OnStar Digital Services; the 2026 and 2027 guides read 3 years OnStar One

High Country, RS: S; LT, Z71: O; 3 years of OnStar One (the 2025 guide words it as 3 years of Super Cruise and digital services by OnStar); LT and Z71 get it only with UKL; the 2027 guide describes OnStar One as including Emergency Advisors, Stolen Vehicle Assistance and an in-vehicle Wi-Fi hotspot