Wheels, 18 x 9.5 black aluminum with machined accents

Years 2026 Models 2 Factory citations 2

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Also documented for Cadillac Chevrolet

Documented applications

Hummer EV Pickup (2022–2027)

2026 Factory-verified

GM factory document — 2026 gmc hummer ev pickup fleet order guide rpo codes, p.1.

Hummer EV SUV — BT1 (2024–2027)

2026 Factory-verified

available only with the Extreme Off-Road Package (Z6X); not available with RCS. 2026: O in 1SF, 1SG; not offered in 3VL.

GM factory document — 2026 gmc hummer ev suv fleet order guide, p.23.

This page aggregates every documented appearance of RB9 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.