Buy 2020 Gmc Sierra 2500 HD SLT Extended Cab Pickup 6.6L V8 A/T 4WD Oxygen Sensor (Rear, Lower). 3.8 EMISSION, Liter, Make - OEM Gmc Part # 19209817 (12616672, 213-4253, 2134253)

Sensor. Oxygen.
Oxygen Sensor. Assembly, Heated (O2) (POSN 2). Ft. Snsr.

Oxygen Sensor

Fits Grand Prix, LaCrosse

3.8 liter. Grand Prix; Front; 3.8L; w/o Supercharger; w/o Dual Exh. LaCrosse; Rear; 3.8L.
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 2020 GMC Sierra 2500 HD to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and GMC genuine parts.