Sensor. Oxygen.
Oxygen Sensor. Heated (O2) (POSN 2). Center Pillar trim plug. Ft. Snsr.

Oxygen Sensor

5.3 liter, front of converter. 5.3 liter, rear of converter. All Models; 5.3L; Front. All Models; 5.3L; Rear. Front. Front, 5.3L. Rear, 5.3L.
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 Chevrolet Spectrum to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Chevrolet genuine parts.