{"product_id":"o2-oxygen-sensor-upstream-downstream-for-gmc-yukon-xl-2500-2008-2013-6-0l","title":"O2 Oxygen Sensor Upstream Downstream for GMC Yukon XL 2500 (2008-2013) 6.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Oxygen Sensor Kit for 2008-2013 GMC Yukon XL 2500 (GMT931)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 4-piece oxygen sensor kit monitors pre- and post-catalytic exhaust gases on the 2008-2013 Yukon XL 2500 to restore precise closed-loop air-fuel metering and prevent catalytic converter fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Yukon Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eHigh thermal cycles, rich cold starts, and sulfur contamination steadily degrade the factory zirconia sensing elements on heavy-duty \u003cstrong\u003eGMT900\u003c\/strong\u003e platform trucks. Over 100,000 miles of heavy towing, sluggish switching response times lead to delayed closed-loop fueling corrections. This deterioration causes excessive fuel trim divergence, compromised fuel economy, fouling of the catalytic substrate, and common check engine light codes including P0135, P0155, P0420, or P0430.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 4-piece direct-fit set matches upstream and downstream operating characteristics to ensure consistent voltage transitions between rich and lean states. Built with fast-activating internal ceramic heaters, high-grade planar sensor elements, and dual-layer protective stainless steel outer shielding, these sensors resist carbon fouling and thermal degradation. Factory-pinned weather-pack connectors ensure clean harness integration without splicing, guaranteeing correct signal resolution for the powertrain control module on high-load \u003cstrong\u003eLY6\u003c\/strong\u003e and \u003cstrong\u003eL96\u003c\/strong\u003e Vortec engines.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2x Upstream Oxygen Sensors\u003c\/li\u003e\n  \u003cli\u003e2x Downstream Oxygen Sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2008-2013 GMC Yukon XL 2500\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e6.0L Vortec (LY6 \/ L96) \/ GMT931 (GMT900)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e352 hp \/ 382 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e21546, 234-4254, 234-4407, 234-4668, 15284, 2344254, 2344668, ES20013, OS1656, OS2239, OS2240, OS2249, SG1857\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2008-2013 GMC Yukon XL 2500 6.0L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT900 Yukon?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2008-2013 GMC Yukon XL 2500 equipped with the \u003cstrong\u003e6.0L\u003c\/strong\u003e Vortec engine. \u003cstrong\u003eDoes not fit 1500 models equipped with 5.3L or 6.2L engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo these sensors require wire cutting or splicing during installation?\u003c\/h4\u003e\n\u003cp\u003eNo, these sensors feature factory-style multi-pin connectors that plug directly into the original GM harness without modification.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for 3\/4-ton heavy hauling and continuous thermal stress, this oxygen sensor set stabilizes air-fuel ratios to protect converter efficiency and maintain consistent torque under sustained towing loads.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551241273592,"sku":"DS-EB0AWUITU","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-gmc-yukon-xl-2500-2008-2013-6-0l-1.jpg?v=1790793884","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-gmc-yukon-xl-2500-2008-2013-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}