Deep Amethyst Metallic

Years 2017–18 Models 2 Factory citations 2

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Also documented for Buick Chevrolet GMC

Documented applications

CT6 — Omega (2016–2020)

2017–2018 Factory-verified

touch-up paint WA-409B; extra charge, none on Platinum; not with the Cinnamon interior; new for 2017; 2018 from the 2018 CT6 order guide (a GM document)

GM factory document — 2017 cadillac ct6 fleet order guide wayback, p.1.
GM factory document — 2018 cadillac ct6 order guide copy gm authority, p.62.

XTS — Epsilon II, enlarged (2013–2019)

2017 Confirmed

extra charge, no additional charge on Platinum or Platinum V-Sport; new for the model year, not with the Kona Brown interior AFF, not available at start of production; the 2018 list deletes it (GM Authority 2017 XTS changes; GM Authority 2018 XTS changes)

This page aggregates every documented appearance of GGA in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.