{"product_id":"denso-o2-oxygen-sensor-234-4669-for-gm-vehicles-cadillac-chevy-gmc-hummer-4-wire-14-8-harness","title":"Denso O2 Oxygen Sensor 234-4669 for GM Vehicles (Cadillac, Chevy, GMC, Hummer) — 4‑Wire 14.8\" Harness","description":"\u003cp\u003e\u003cstrong\u003eThe Denso 234-4669 is a direct-replacement narrow-band oxygen sensor engineered to restore accurate exhaust oxygen readings and match original equipment fit for select Cadillac, Chevrolet, GMC and Hummer models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned and tested to rigorous OE specifications, this Denso oxygen sensor offers a precision-built zirconia element, corrosion-resistant housing and a protective trap layer to help shield the sensing element from contaminants. It arrives with a 14.76-inch, four‑wire harness and is intended as a one-to-one replacement for many model-year applications, simplifying installation and helping the engine control module regain accurate air-fuel ratio feedback.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles will accept the 234-4669 oxygen sensor?\u003c\/h3\u003e\n\u003cp\u003eThis sensor is compatible with a broad range of General Motors vehicles across Cadillac, Chevrolet, GMC and Hummer nameplates from the early 2000s up through select later years. Compatibility covers various Escalade, Silverado, Sierra, Yukon, Avalanche, Camaro, Caprice, Corvette and H2 models—check your specific year and engine combination before ordering. The sensor replaces OEM numbers 12572705 and 12617332 in many applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCadillac Escalade, Escalade ESV, Escalade EXT (2003–2006)\u003c\/li\u003e\n  \u003cli\u003eChevrolet Silverado, Avalanche, Suburban, Camaro, Caprice, Corvette (selected years listed)\u003c\/li\u003e\n  \u003cli\u003eGMC Sierra, Yukon, Yukon XL (selected 2003–2014 years)\u003c\/li\u003e\n  \u003cli\u003eHummer H2 (2003–2006)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this Denso sensor protect the engine control system?\u003c\/h3\u003e\n\u003cp\u003eThe sensor includes Denso’s aluminum oxide trap and a PTFE filter to reduce exposure of the ceramic sensing element to silicone, lead and other contaminants. Those protections help the zirconia element maintain a quick and reliable voltage response so the vehicle’s ECU receives consistent oxygen-level data. A stable signal can improve combustion control and make diagnostics more straightforward.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum oxide trap layer reduces contaminant poisoning risk\u003c\/li\u003e\n  \u003cli\u003ePTFE filter limits efficiency-robbing particulates\u003c\/li\u003e\n  \u003cli\u003eRefined zirconia element for responsive oxygen sensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical and electrical features to expect?\u003c\/h3\u003e\n\u003cp\u003eThe 234-4669 is a four-wire, narrow-band O2 sensor packaged with a 14.76-inch wiring harness for ease of routing and connection. It uses a corrosion-resistant stainless steel shell for long service life and ships as a single unit sized to match original equipment. Installation generally follows standard O2 sensor replacement steps and requires proper torque and connector mating for reliable operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFour-wire design with 14.76-inch harness for direct plug-in\u003c\/li\u003e\n  \u003cli\u003eStainless steel construction to resist corrosion and wear\u003c\/li\u003e\n  \u003cli\u003eCompact package: approximately 5.75 x 2.19 x 1.88 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this sensor simplify troubleshooting and service?\u003c\/h3\u003e\n\u003cp\u003eBecause the part is built to OE form, fit and function, it reduces variables when diagnosing exhaust, emissions or fuel-trim related trouble codes. Swapping a degraded or contaminated sensor for this Denso unit can clarify whether a fault is sensor-related or caused by other system components. After installation, monitor live oxygen sensor voltages and fuel trim values to confirm healthy operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOE-quality fit reduces installation mismatch issues\u003c\/li\u003e\n  \u003cli\u003eImproved signal response aids ECU diagnostics\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for common GM OEM part numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Professional technicians and DIY mechanics who need a reliable, OE-grade replacement oxygen sensor for specific Cadillac, Chevrolet, GMC and Hummer vehicles. It’s suited for anyone replacing a failing O2 sensor, addressing emissions-related fault codes, or restoring proper closed-loop fuel control in compatible GM applications.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this Denso O2 sensor fit my 2005 Silverado 1500?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—234-4669 is listed for many 2003–2006 Silverado 1500 models, but confirm your engine and OEM part interchange before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many wires and what harness length does this sensor have?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It’s a four-wire narrow-band sensor supplied with a 14.76-inch wiring harness for plug-and-play installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":48084027375774,"sku":"B00199FCU4","price":85.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/denso-o2-sensor-front-view.jpg?v=1785844005","url":"https:\/\/northtrailauto.ca\/products\/denso-o2-oxygen-sensor-234-4669-for-gm-vehicles-cadillac-chevy-gmc-hummer-4-wire-14-8-harness","provider":"North Trail Auto","version":"1.0","type":"link"}