Shop 2008 GMC Sierra 1500 Oxygen Sensor (Rear, Upper, Lower). 4.3 liter. Silverado, Sierra; 4.3L; Rear. EMISSION, Liter, Make - OEM GMC Part # 12609456

Sensor. Oxygen.
Oxygen Sensor. Center Pillar trim plug. Ft. Snsr.

Oxygen Sensor

Fits H2 , Sierra 1500, Silverado

4.3 liter. Silverado, Sierra; 4.3L; Rear.
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.