2020 Gmc Sierra 2500 HD Base Extended Cab Pickup Oxygen Sensor (Rear, Lower) - 12559850

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2020 GMC Sierra 2500 HD Base Extended Cab Pickup

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Oxygen Sensor (Rear, Lower)

Part Number: 12559850

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Sensor. Oxygen.
Oxygen Sensor. Heated (O2). Ft. Snsr.

Oxygen Sensor

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.

EMISSION SYSTEM.

Full Diagram

at converter. in exhaust manifold. purge valve. vapor canister.

Left.in exhaust manifold. Right.in exhaust manifold.

EMISSION SYSTEM. EMISSION COMPONENTS.

Full Diagram

at manifold. cleaner. no. 1. no. 2. post converter.

at manifold. post converter.

EMISSION SYSTEM. EMISSION COMPONENTS.

Full Diagram

#17

1ST design. 2000-01. 2ND design. 3. 4 liter. Emissions rear. Front. Idle air control. On manifold. Post converter.

2000-01. 3.4 LITER. on manifold.

EMISSION SYSTEM. EMISSION COMPONENTS.

Full Diagram

#12

At converter. At manifold. California emissions. Canister to fuel tnk. Canister to vent vlv. Front. Inlet. Large. Outlet. Post converter. Pre converter. Rear. Small.

at manifold. CALIFORNIA EMISSIONS.

EMISSION SYSTEM. EMISSION COMPONENTS.

Full Diagram

3. 4 liter. Front. Idle air control. Rear.

3.4 LITER. front.

EMISSION SYSTEM. EMISSION COMPONENTS.

Full Diagram

#12

3. 4 liter. Canister to fuel tnk. Canister to vent vlv. Front. Large. Rear. Small.

3.4 LITER.

Emission system. Front door. Emission components.

Full Diagram

#15

A.I.R. pump. At converter. At exhaust manifold. California emissions. Rear.

at exhaust manifold. Left.CALIFORNIA EMISSIONS. Right.CALIFORNIA EMISSIONS.

EMISSION SYSTEM. EMISSION COMPONENTS.

Full Diagram

#14

ALL. Vapor canister. 2. 2 liter. 4. 3 liter. At manifold. California. Cpi. Efi. EGR valve. Federal. Front of converter. Rear of converter. W/EXTENDED build. W/FLEXIBLE fuel. W/O extended build. W/O flexible fuel.

4.3 LITER. front of converter. rear of converter.

EMISSION SYSTEM. EMISSION COMPONENTS.

Full Diagram