Interior, Jet Black, Inteluxe seats, Lunar Brushed aluminum trim

Years 2019–20, 2025–26 Models 4 Factory citations 7

Also described as Interior, Jet Black, leatherette seating surfacesInterior, Jet Black with Jet Black accents, Inteluxe seatsSeat trim, Inteluxe seats, Jet Black

Also documented for Buick Chevrolet GMC

Documented applications

ATS — Alpha (2013–2019)

2019 Single-source

1SC, 1SD; the 2014, 2015 and 2018 guides print the code with a footnote digit attached (H2G2, H2G1), so those years are left out; 2019 from GM Authority's 2019 ATS interior colors page

CT4 — Alpha 2 (2020–2026)

2020, 2025–2026 Factory-verified

CT4 Luxury; Pitch Dark Night center console trim; seat code AQ9; 2020 from GM Authority's 2020 CT4 interior colors page

GM factory document — 2025 cadillac ct4 fleet order guide, p.34.
GM factory document — 2026 cadillac ct4 fleet order guide, p.31.

XT5 — C1XX (2017–2026)

2025–2026 Factory-verified

front bucket seats (AR9); Luxury; also in the Professional Vehicles guides

GM factory document — 2025 cadillac xt5 fleet order guide, p.38.
GM factory document — 2026 cadillac xt5 fleet order guide, p.38.
GM factory document — 2025 cadillac xt5 professional vehicles fleet order guide, p.15.
GM factory document — 2026 cadillac xt5 professional vehicles fleet order guide, p.14.

XT6 — C1XX (2020–2025)

2025 Factory-verified

Luxury; Lunar Brushed aluminum trim

GM factory document — 2025 cadillac xt6 fleet order guide, p.40.

This page aggregates every documented appearance of H2G in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.