- 2026–2027 Factory-verified
Platinum: S; GM Authority confirms; 2027 list reads "alloy" and omits the metric size
RDG Factory-verified
Also documented for ChevroletGMC
Documented applications
This page aggregates every documented appearance of RDG in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.