O2 Oxygen Sensor Replacement 4pc Set for GM/Suzuki/Saab/Isuzu Vehicles (1996-2011)Replace all four oxygen sensors on your GM vehicle with this complete setengineered to eliminate persistent check engine lights, restore lost fuel economy, and fix the P0420 P0430 codes common on 1990s 2000s models. Fix the Check Engine Light That Won't Go Away If you're fighting a persistent check engine light on your 1996 2011 GM vehicleChevy, GMC, Cadillac, Buick, Pontiac, or Oldsmobilethere's a strong chance oxygen sensors are the culprit.