Shop 2003 GMC Yukon XL 2500 Oxygen Sensor (Rear). All Models; 8.1L; Rear; Left. Rear of converter, 8.1L Left, EMISSION, Liter - OEM GMC Part # 12572707

Oxygen Sensor.
Oxygen Sensor.

Oxygen Sensor

Fits Avalanche 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Silverado, Suburban 2500, Yukon XL 2500

All Models; 8.1L; Rear; Left. Rear of converter, 8.1L. Rear, 8.1 liter. Rear, 8.1L.
Oxygen Sensor - Repair or Replace
A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it does cause your to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and genuine parts.