- 2019 Factory-verified
touch-up WA-634D; extra cost, not on SL
GS6 Factory-verified
Also described as Smokey Quartz MetallicPaint, Scorpion Metallic
Also documented for CadillacChevrolet
Documented applications
- 2019 Factory-verified
touch-up WA-634D; the 2019 upfitter list names it Scorpion Metallic; 2019 from GM Authority, 2019 Canyon exterior colors
- 2019–2020 Factory-verified
touch-up 634D
This page aggregates every documented appearance of GS6 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.