{"product_id":"o2-oxygen-sensor-upstream-downstream-for-gmc-acadia-2012-2017-3-6l","title":"O2 Oxygen Sensor Upstream Downstream for GMC Acadia (2012-2017) 3.6L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Oxygen Sensor Kit for 2012-2017 GMC Acadia (Lambda)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit oxygen sensor kit monitors pre- and post-catalytic exhaust gas stoichiometry on the 2012-2017 GMC Acadia to restore closed-loop engine management, improve fuel economy, and eliminate emission-related trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Acadia Sensor Degradation and Fuel Trim Drift\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eLambda\u003c\/strong\u003e platform 3.6L undergo extreme thermal cycling and exhaust gas contamination over prolonged service. As the internal zirconia ceramic element ages past 80,000 miles, response times degrade, creating delayed voltage switching between rich and lean states. This signal latency causes the engine control module (ECM) to overcompensate short- and long-term fuel trims (STFT\/LTFT), inducing unburned hydrocarbon loading into the catalytic converters. The consequence is reduced fuel economy, sluggish throttle response, and persistent check engine lights (P0135, P0155, P0420, or P0430).\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 4-piece sensor package provides complete upstream and downstream replacement using high-grade planar zirconium dioxide sensing elements with porous platinum electrodes. Housed in laser-welded stainless steel bodies with dual-layer protective filtration, these sensors resist soot fouling, silicone wash, and thermal shock up to 1,400°F. Factory-pinned wiring harnesses and OEM-matched weatherproof connectors eliminate the high-resistance signal drop common to universal splice repairs, ensuring immediate, high-fidelity millivolt output to restore factory stoichiometric efficiency.\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;\"\u003e2012-2017 GMC Acadia\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;\"\u003e\n\u003cstrong\u003eLFX\u003c\/strong\u003e \/ \u003cstrong\u003eLambda\u003c\/strong\u003e\n\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;\"\u003e288 hp \/ 270 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;\"\u003e\n\u003cstrong\u003eS4-4565\u003c\/strong\u003e, \u003cstrong\u003e234-4566\u003c\/strong\u003e, \u003cstrong\u003e12590035\u003c\/strong\u003e, \u003cstrong\u003e12597449\u003c\/strong\u003e, \u003cstrong\u003e12616203\u003c\/strong\u003e, \u003cstrong\u003e12634064\u003c\/strong\u003e, \u003cstrong\u003e2344818\u003c\/strong\u003e, \u003cstrong\u003e12596688\u003c\/strong\u003e, \u003cstrong\u003e12634085\u003c\/strong\u003e, \u003cstrong\u003e12640453\u003c\/strong\u003e, \u003cstrong\u003e1821378J10\u003c\/strong\u003e, \u003cstrong\u003e2344259\u003c\/strong\u003e, \u003cstrong\u003e2344840\u003c\/strong\u003e\n\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\u003e2012 GMC Acadia 3.6L V6\u003c\/li\u003e\n  \u003cli\u003e2013 GMC Acadia 3.6L V6\u003c\/li\u003e\n  \u003cli\u003e2014 GMC Acadia 3.6L V6\u003c\/li\u003e\n  \u003cli\u003e2015 GMC Acadia 3.6L V6\u003c\/li\u003e\n  \u003cli\u003e2016 GMC Acadia 3.6L V6\u003c\/li\u003e\n  \u003cli\u003e2017 GMC Acadia Limited 3.6L V6\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 Lambda Acadia?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2012-2017 GMC Acadia equipped with the \u003cstrong\u003eLFX\u003c\/strong\u003e 3.6L V6 engine. \u003cstrong\u003eConfirm engine displacement prior to ordering; this kit does not fit 2.5L 4-cylinder models introduced in late-2017 C1XX redesigns.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo these sensors require wire splicing or ECM reprogramming?\u003c\/h4\u003e\n\u003cp\u003eNo, these sensors feature factory-style direct-plug harnesses and factory-calibrated resistance, requiring no wiring modification or ECU recalibration.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Utility Standard\u003c\/h3\u003e\n\u003cp\u003eHeavy hauling and family utility demand consistent powertrain reliability; restoring your exhaust feedback loop protects your catalytic converters under sustained towing loads and ensures clean, efficient torque delivery.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551494799608,"sku":"DS-E6V03GZ4Q","price":89.95,"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-acadia-2012-2017-3-6l-1.jpg?v=1790797487","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-gmc-acadia-2012-2017-3-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}