O2 Oxygen Sensor Upstream Downstream for Chevrolet Silverado 2500 HD (2008-2011) 6.0L

Direct-Fit 4-Piece Oxygen Sensor Kit for 2008-2011 Chevrolet Silverado 2500 HD (GMT900)

What it Does: The 4-piece direct-fit oxygen sensor kit monitors pre- and post-catalytic exhaust gas oxygen content on the 2008-2011 Silverado 2500 HD to restore precise closed-loop fueling and eliminate emissions-related trouble codes.

The Stock Chevrolet Silverado Sensor Degradation

On heavy-duty GMT900 trucks driven under continuous hauling cycles, the factory LY6 and L96 6.0L oxygen sensors suffer from thermal fatigue, carbon wash, and internal heater element breakdown. As sensors surpass 80,000 to 100,000 miles, their switching speeds degrade significantly. This latency blinds the engine control module, driving erratic short-term fuel trims (STFT), diminished fuel efficiency, and recurring catalytic inefficiency or heater circuit diagnostic trouble codes (DTCs P0135, P0155, P0420, or P0430).

The Engineering Solution

Engineered for high-duty thermal endurance, this complete 4-sensor set incorporates fast-acting planar ceramic zirconia elements protected by laser-welded stainless steel outer shanks. The internal rapid-heating circuits attain operational temperature within seconds, transitioning the engine quickly out of high-emissions open-loop mode. Featuring factory-keyed weather-pack electrical connectors and factory-length thermal-sleeved wiring harnesses, these sensors install directly without harness splicing, restoring crisp lambda feedback across both cylinder banks.

What's Included

• 2x Upstream Oxygen Sensors
• 2x Downstream Oxygen Sensors

Technical Specifications

Compatibility

• 2008-2011 Chevrolet Silverado 2500 HD (6.0L V8)

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT900 Silverado?

Yes, this is a direct fit for the 2008-2011 Chevrolet Silverado 2500 HD equipped with the LY6 or L96 6.0L engine. Does not fit 6.6L Duramax turbo-diesel models or light-duty 1500 truck exhaust configurations.

Should I reset fuel trim values after installing all four sensors?

Yes, clearing active DTCs and resetting long-term fuel trim (LTFT) adaptive tables with a scan tool allows the PCM to immediately establish accurate fuel mapping.

The Chevrolet Heavy-Duty Caliber

Built to handle severe commercial duty cycles and maximum towing strain, replacing all four worn sensors at once ensures balanced cylinder bank fueling, protected catalytic converters, and uncompromised pulling power.