Buy 2020 Gmc Sierra 2500 HD Base Extended Cab Pickup Oxygen Sensor (Rear, Lower). 4.3 LITER, at Converter, Front - OEM Gmc Part # 19178918 (25312200)

Sensor. Oxygen.
Oxygen Sensor. Under GVW 8,500 Lbs. Vendor:ACDELCO. Assembly, Heated (O2). Ft. Snsr.

Oxygen Sensor

4.3 LITER, at manifold. 4.3 LITER, front of converter. 4.3 LITER, rear of converter. All Models; 4.3L; On Manifold. All Models; 5.0L, 5.7L; On Manifold. Astro, Safari; On Manifold. Engine. Express, Savana; Under 8500 GVW. Express, Savana; Under 8500 GVW; Front; 4.3L, 5.0L, 5.7L. Front of converter. Front of converter, w/o square connecto. Rear of converter. S-Series; 4.3L; All. W/O DIESEL.
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.