{"product_id":"oxygen-sensors-for-gmc-canyon-2009-2012-5-3l-upstream-downstream","title":"Oxygen Sensors for GMC Canyon (2009-2012) 5.3L Upstream \u0026 Downstream","description":"\u003ch2\u003ePrecision-Calibrated Oxygen Sensor Set for 2009-2012 GMC Canyon\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 4-piece oxygen sensor kit replaces worn factory upstream and downstream sensors on the 2009-2012 Canyon to restore precise closed-loop air-fuel management, clear catalytic efficiency trouble codes, and stabilize idle quality.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Canyon Exhaust Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory lambda sensors on the \u003cstrong\u003eGMT355\u003c\/strong\u003e platform endure extreme thermal cycling and exhaust gas contamination over prolonged service intervals. As the internal zirconia ceramic planar elements age, response switching speeds between rich and lean states degrade significantly. This sluggish sensor latency skews short-term and long-term fuel trims (STFT\/LTFT), leading to unburnt hydrocarbon accumulation, spark plug fouling, diminished fuel economy, and persistent check engine lights (CEL) triggered by codes such as P0130 through P0161 or catalytic threshold DTCs P0420 and P0430.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to restore original equipment response rates, this direct-fit 4-piece sensor array features dual-layer stainless steel outer shielding to isolate the internal sensing element from particulate contamination and thermal shock. Precision-calibrated heaters reach operational light-off temperatures within seconds, ensuring rapid transition from open to closed-loop ECU calibration. Pinned factory-style weather-pack connectors eliminate wire splicing, ensuring uninterrupted signal continuity back to the ECM without resistance fluctuations.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\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;\"\u003e2009-2012 GMC Canyon\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;\"\u003e5.3L Vortec LH8 \/ LH9 Gen IV V8 \/ \u003cstrong\u003eGMT355\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;\"\u003e300 hp \/ 320 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;\"\u003e12609459, 12611165, 12573167, 12587785\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2009-2012 GMC Canyon SLE 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2009-2012 GMC Canyon SLT 5.3L V8\u003c\/li\u003e\n  \u003cli\u003e2009-2012 GMC Canyon WT 5.3L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GMT355 Canyon?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2009-2012 GMC Canyon equipped with the \u003cstrong\u003eLH8\u003c\/strong\u003e or \u003cstrong\u003eLH9\u003c\/strong\u003e 5.3L V8 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo these sensors require cutting or splicing into the factory harness?\u003c\/strong\u003e\u003cbr\u003e No, each sensor features factory-spec keyway connectors designed for direct plug-and-play installation into the OEM engine harness.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Truck Standard\u003c\/h3\u003e\n\u003cp\u003eMaintaining accurate air-fuel metering is critical to hauling capacity and engine longevity. Replacing all four sensors as a matched set restores the stoichiometric fuel balance necessary to preserve exhaust valves, maintain towing torque, and protect catalytic converters under heavy load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511146221816,"sku":"DS-EJ7P11IFE","price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-gmc-canyon-2009-2012-5-3l-upstream-downstream-1.jpg?v=1789410716","url":"https:\/\/performancechiptuning.com\/fr\/products\/oxygen-sensors-for-gmc-canyon-2009-2012-5-3l-upstream-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}