Shop Cadillac Escalade EXT Wheel. 18", code: RT5. SPARE, aluminum, code: S1U. Wheel - Repair or Code, May, Spare, Repair - OEM Cadillac Part # 23376220

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 Sierra 1500, Sierra 1500 Limited, Silverado

18", code: RT5. SPARE, aluminum, code: S1U.
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.