{"product_id":"o2-oxygen-sensor-rear-downstream-for-chevy-gmc-pickup-truck-2002-2007","title":"O2 Oxygen Sensor Rear Downstream for Chevy GMC Pickup Truck (2002-2007)","description":"\u003cp\u003e\u003cem\u003eStop burning more fuel than necessary in your big-block or heavy-duty hauler and finally clear that Check Engine Light with a direct-fit sensor replacement.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReplacement Oxygen Sensor for Chevy Silverado, GMC Sierra \u0026amp; Hummer H2 (6.0L \/ 8.1L Vortec)\u003c\/h2\u003e\n\u003cp\u003eIf you are driving a heavy-duty GM truck from the early 2000s, you know that the Vortec 6.0L and the massive 8.1L Big Block are legendary for their towing capacity, but they aren't exactly known for sipping fuel. When an oxygen sensor fails on these rigs, your mileage can drop from \"tolerable\" to \"painful\" very quickly. A slow or dead O2 sensor sends incorrect data to the ECU, forcing the engine to run rich as a safety precaution. This doesn't just hurt your wallet at the pump; it can foul your spark plugs and eventually damage your catalytic converters.\u003c\/p\u003e\n\u003cp\u003eThis replacement Oxygen Sensor is designed specifically for the heavy-duty applications of the GMT800 platform and related SUVs like the Hummer H2. Unlike universal \"one-size-fits-all\" sensors that require you to strip wires and crimp connectors, this unit features the correct factory-style Gray connector and a 580mm wire harness. It is a true plug-and-play solution. Whether you are dealing with a rough idle, a failed emissions test, or just a glowing dashboard light, this sensor provides the accurate air\/fuel ratio data your truck needs to run efficiently.\u003c\/p\u003e\n\u003cp\u003eBuilt to strict quality control standards, this 4-wire sensor handles the high-heat environment of a working truck. It is designed to replace the specific dealer part numbers listed below, ensuring that the resistance and signal range match what your GM engine computer expects. Get your tow rig back to peak performance without the hassle of wire splicing.\u003c\/p\u003e\n\u003ch2\u003eWhy You Need This Upgrade\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestore Fuel Economy:\u003c\/strong\u003e Replaces aging sensors that cause the engine to run \"rich,\" helping you reclaim lost MPGs on your 6.0L or 8.1L.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Plug-and-Play:\u003c\/strong\u003e Features the correct Gray plug and 4-wire configuration, so no cutting, splicing, or soldering is required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect Fitment:\u003c\/strong\u003e The 580mm (approx. 23 inch) wire length is sized to reach the factory harness clip without tension or excess slack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissions Compliance:\u003c\/strong\u003e Accurate sensor data is critical for passing smog tests and keeping your catalytic converter healthy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Health:\u003c\/strong\u003e Helps resolve rough idling and hesitation caused by improper fuel mixture adjustments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable style=\"border-collapse: collapse; border: 1px solid #e0e0e0; margin-bottom: 20px;\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eFitment\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003e2001-2007 GM Heavy Duty Trucks\/SUVs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eEngine Family\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003eVortec 6.0L V8 \u0026amp; 8.1L V8 Big Block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eWire Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003e580mm (Gray Connector)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eConfiguration\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003e4-Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward but requires working around a hot exhaust system—always let the vehicle cool completely before starting. A specialized slotted O2 sensor socket is highly recommended to remove the old sensor without rounding off the hex head. This sensor features a Gray connector; please visually verify your existing sensor plug color matches before ordering, as GM sometimes used different color keys for different positions.\u003c\/p\u003e\n\u003ch3\u003eReplaces These OEM Applications \u0026amp; Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGMC Yukon 6.0L V8 \/ 8.1L V8 2002-2006\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 3500 6.0L V8 2002-2007\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2500 HD 6.0L V8 \/ 8.1L V8 2002-2007\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 1500 6.0L V8 2002-2007\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 3500 6.0L V8 2002-2007\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 2500 6.0L V8 2002-2007\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 1500 HD 6.0L V8 2001-2007\u003c\/li\u003e\n\u003cli\u003eChevrolet Suburban 2500 6.0L V8 2002\u003c\/li\u003e\n\u003cli\u003eHummer H2 6.0L V8 2003\u003c\/li\u003e\n\u003cli\u003eCadillac Escalade ESV\/EXT 6.0L V8 2003-2004\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-family: monospace; font-size: 0.9em; color: #666; background-color: #f5f5f5; padding: 10px; border-radius: 4px;\"\u003e234-4286, 25333812, 25333817, SG970\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDon't let a $50 part cost you hundreds in fuel—replace your faulty Oxygen Sensor today and keep your Vortec running right.\u003c\/strong\u003e\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":47758427750648,"sku":"DS-O2SENSOR15","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/O2_sensor_GMC1__84638.1608920191.1280.1280.jpg?v=1767728703","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-rear-downstream-for-chevy-gmc-pickup-truck-2002-2007","provider":"Performance Chip Tuning","version":"1.0","type":"link"}