- 2018–2019 Factory-verified
touch-up WA-388A; the 2019 upfitter list names it Blue Me Away Metallic; 2018 from GM Authority, 2018 Canyon exterior colors
GD1 Factory-verified
Also described as Marine Blue Metallic
Also documented for CadillacChevrolet
Documented applications
- 2018 Factory-verified
touch-up 388A
This page aggregates every documented appearance of GD1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.