Shop OEM General Motors Part # 84604778. Wheel. 18", OEM, code: RCW. SPARE, aluminum, code: S1W. Wheel - Repair or Replace Your wheel may need replacement or repair if you

Rim. Spare wheel. Wheel, alloy.
A wheel / Rim of a vehicle, which may or may not come with a tire mounted to it.

Wheel

Fits Silverado

18", OEM, code: RCW. SPARE, aluminum, code: S1W.
Wheel - Repair or Replace
Your wheel may need replacement or repair if you notice a wheel hop in your —in other words, you notice a steering wheel shimmy at highway speeds.