- 2020 Single-source
extra cost; only on Luxury and Premium Luxury; 2020 from GM Authority's 2020 CT4 exterior colors page
GLR Single-source
Also documented for BuickChevroletGMC
Documented applications
This page aggregates every documented appearance of GLR in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.