Paint, Slate Gray Metallic

Years 2024–26 Models 3 Factory citations 7

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Also described as Paint, solid, Slate Gray Metallic

Also documented for Cadillac GMC

Documented applications

Silverado EV — BT1 (2024–2027)

2025–2026 Factory-verified

touch-up WA-633D; 2025: any interior; 2026: Black interior only; built out for Model Year; Sierra EV reads "Paint, Thunderstorm Gray"

GM factory document — 2025 chevrolet silverado ev fleet order guide, p.39.
GM factory document — 2026 chevrolet silverado ev fleet order guide, p.63.

Silverado Medium Duty (GM515, 2019–2026)

2025–2026 Factory-verified

touch-up WA-633D

GM factory document — 2025 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide, p.120.
GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide, p.117.

Silverado — T1XX (2019–2026)

2024–2025 Factory-verified

touch-up WA-633D; not in the 2026 guide; 2025: not on 1WT, 1LT, 2FL, 2LT or 1LZ, not at start of production on 3LZ; the upfitter lists name it Barb Wire;

GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.13.
GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide, p.218.
GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide, p.219.

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