- 2018–2019 Factory-verified
1SP: O, premium paint; new for 2018
G0Y Factory-verified
Also described as Rioja Red Metallic
Documented applications
- 2019 Factory-verified
2019: premium paint; not on Regal or GS (2019 Sportback order guide)
This page aggregates every documented appearance of G0Y in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.