Shop OEM GENERAL MOTORS Part # 12572707. Oxygen Sensor (Rear). All Models; 8.1L; Rear; Left. Rear of converter, 8.1L. Rear, 8.1 liter. Rear, 8.1L. Oxygen Sensor - Repair or

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.