Wheel, spare, 18 x 9 Black aluminum with machined accents

Years 2024–27 Models 2 Factory citations 8

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Also described as Wheel, spare, 18" (45.7 cm)

Also documented for Buick Cadillac

Documented applications

Hummer EV SUV — BT1 (2024–2027)

2025–2026 Factory-verified

available only with the Extreme Off-Road Package (Z6X). 2025: O in 1SF, 1SG; 2026: O in 1SF, 1SG; not offered in 3VL.

GM factory document — 2025 gmc hummer ev suv fleet order guide, p.19.
GM factory document — 2026 gmc hummer ev suv fleet order guide, p.22.

Sierra HD — T1XX (2020–2027)

2024–2027 Factory-verified

only in: 2500 HD; AEV Edition; GM prints the metric size as 50.8 cm (that is 20 inches); the ULV package text gives 18 x 9; 2024: GM Authority 2024 changes page; AT4X: O; Pro, SLE, SLT, AT4, Denali, Denali Ultimate: not offered

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.80.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.76.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.74.

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