{"product_id":"o2-oxygen-sensor-upstream-downstream-for-chevrolet-equinox-2005-2007-3-4l","title":"O2 Oxygen Sensor Upstream Downstream for Chevrolet Equinox (2005-2007) 3.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit O2 Oxygen Sensor Kit for 2005-2007 Chevrolet Equinox (GMT191)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This upstream and downstream oxygen sensor kit monitors exhaust oxygen content on the 2005-2007 Chevrolet Equinox (\u003cstrong\u003eGMT191\u003c\/strong\u003e) \u003cstrong\u003e3.4L V6\u003c\/strong\u003e to regulate closed-loop fuel trims and catalyst efficiency.\u003c\/p\u003e\u003ch3\u003eThe Stock Chevrolet Equinox Sensor Failure\u003c\/h3\u003e\u003cp\u003eOn the \u003cstrong\u003eGMT191\u003c\/strong\u003e chassis equipped with the \u003cstrong\u003eLNJ 3.4L V6\u003c\/strong\u003e, factory oxygen sensors endure severe exhaust heat soak and thermal cycling. Over time, carbon soot, oil vapor, or trace intake coolant contamination fouls the porous zirconia element, slowing rich-to-lean voltage switching. Meanwhile, underbody vibration fatigues internal heater coils, triggering open-circuit faults like \u003cstrong\u003eP0135\u003c\/strong\u003e or \u003cstrong\u003eP0141\u003c\/strong\u003e and forcing the ECM into rich open-loop fueling.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM Oxygen Sensor\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \/ DTCs:\u003c\/strong\u003e Triggers codes like \u003cstrong\u003eP0133\u003c\/strong\u003e (slow response), \u003cstrong\u003eP0135\u003c\/strong\u003e\/\u003cstrong\u003eP0141\u003c\/strong\u003e (heater circuit), or \u003cstrong\u003eP0171\u003c\/strong\u003e fuel trim skews.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRough Idle \u0026amp; Poor Economy:\u003c\/strong\u003e Sluggish upstream feedback delays fuel corrections, causing rich running and fouled plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissions Failure:\u003c\/strong\u003e A degraded downstream sensor misreads oxygen storage, triggering false \u003cstrong\u003eP0420\u003c\/strong\u003e catalyst codes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Zirconia Oxygen Sensor Solution\u003c\/h3\u003e\u003cp\u003eThis matched kit replaces both pre- and post-catalyst sensors together to restore accurate ECM feedback on the \u003cstrong\u003eLNJ 3.4L V6\u003c\/strong\u003e. Each unit pairs a fast-heating zirconia sensing element with a corrosion-resistant stainless steel housing and laser-welded protective shield. Factory-length sleeved harnesses and OEM-style connectors allow direct thread-in bolt-on installation into stock exhaust bungs with zero cutting, splicing, or wiring modification.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 Upstream Oxygen Sensor\u003c\/li\u003e\n\u003cli\u003e1 Downstream Oxygen Sensor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\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;\"\u003e2005-2007 Chevrolet Equinox\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;\"\u003eLNJ 3.4L V6 \/ GMT191\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;\"\u003eSensor Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect-Fit Heated Zirconia (Upstream \u0026amp; Downstream)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eInstallation Type\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect Bolt-On OEM Replacement (No Cutting or Welding)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2005-2007 Chevrolet Equinox 3.4L\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the GMT191 Equinox?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Direct fit for 2005-2007 Chevrolet Equinox models with the \u003cstrong\u003eLNJ 3.4L V6\u003c\/strong\u003e engine. \u003cstrong\u003eConfirm engine before ordering; excludes 2008-2009 3.6L models.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135, P0141, or P0420 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes,\u003c\/strong\u003e when triggered by faulty sensors or heater coils. Persistent \u003cstrong\u003eP0420\u003c\/strong\u003e codes after replacement indicate exhaust leaks or catalyst wear.\u003c\/p\u003e\u003ch4\u003eIs wire splicing required for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e Both sensors include OEM-style connectors for plug-and-play installation; clean bung threads and torque to factory spec.\u003c\/p\u003e\u003ch3\u003eThe Chevrolet Precision Standard\u003c\/h3\u003e\u003cp\u003eAccurate closed-loop feedback keeps the \u003cstrong\u003eGMT191\u003c\/strong\u003e Equinox running cleanly under daily load. Replacing both sensors together safeguards catalyst longevity and maintains CEL-free emissions compliance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68094232232184,"sku":"DS-ESZ0TEAZW","price":37.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-chevrolet-equinox-2005-2007-3-4l-1.jpg?v=1794617983","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-chevrolet-equinox-2005-2007-3-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}