{"product_id":"premium-aftermarket-o2-sensor-234-4256-for-chevy-silverado-tahoe-gmc-sierra-2pcs","title":"2-Pc Downstream O2 Sensor Set 234-4256 for Chevy Silverado, Tahoe \u0026 GMC Sierra","description":"\u003cdiv class=\"qJYHHd mp0vvc\"\u003e\n\u003cdiv class=\"tonYlb\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003cdiv class=\"CKgc1d\"\u003e\n\u003cdiv class=\"Zkbeff\" dir=\"ltr\"\u003e\n\u003cdiv class=\"pWvJNd\"\u003e\n\u003cdiv dir=\"ltr\" class=\"mZJni Dn7Fzd\"\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\n\u003cstrong\u003e\u003cspan\u003e2-Piece Downstream Oxygen Sensor Set\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003ePackage includes two downstream oxygen sensors equivalent to 234-4256. They are intended for select General Motors applications that use matching post-catalytic-converter sensors for Bank 1 and Bank 2. Compatibility varies by model year, engine, emissions specification, connector, and sensor position. Please verify the OE part numbers on both existing sensors before ordering.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003chr class=\"s6NV4e\"\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003eCore Technical Specifications\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eSensor Layout Position:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Downstream Only (Post-Catalytic Converter \/ Sensor 2, Bank 1 \u0026amp; Bank 2).\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eSensor Design Type:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 4-Wire Planar Heated Oxygen Sensor (Narrowband, 0-1 Volt scale).\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003chr class=\"s6NV4e\"\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003eGlobal Cross-Reference Interchange Numbers\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003eIf you are validating warehouse distribution inventories or looking up alternative brands, part number 234-4256 is an exact direct interchange for the following manufacturer part numbers:\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eGeneral Motors (GM) \/ AC Delco OEM:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 12609457, 12611165, 12611843, 12616201, 12617332, 19258245, \u003ca href=\"https:\/\/www.yepzparts.com\/\"\u003e213-4408, 213-4416, 213-4552\u003c\/a\u003e, 213-4601, 213-4767\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eBosch Aftermarket:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 15150 \/ 15282 \/ 15283\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eNTK \/ NGK Aftermarket:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 21021 \/ 21535\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eDelphi Aftermarket:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e ES20113 \/ ES20120\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eWalker Products:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 250-24471\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003chr class=\"s6NV4e\"\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\n\u003cstrong\u003eComprehensive GM Vehicle Application Registry\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\n\u003cstrong\u003e\u003cspan\u003eImportant Fitment Information\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe applications below are general references and require vehicle-specific verification. Confirm the model year, engine size, Federal or California emissions configuration, connector, sensor position, and OE numbers before ordering. Some vehicles may not use the same downstream sensor on both banks.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003eThe 234-4256 downstream sensor primarily serves General Motors light-duty trucks, full-sized SUVs, and passenger vehicle platforms spanning model years \u003cstrong class=\"rQesXe MPyX\"\u003e2007 to 2016\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e:\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"AdPoic\" role=\"heading\"\u003e1. Chevrolet Fitment List (Chevy)\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Silverado 1500 \/ 2500 HD \/ 3500 HD:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 4.8L, 5.3L, 6.0L, 6.2L V8 engines (2008–2014)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Tahoe \/\u003ca href=\"https:\/\/www.yepzparts.com\/\"\u003e Suburban 1500 \/ Suburban 2500\u003c\/a\u003e:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 4.8L, 5.3L, 6.0L, 6.2L V8 configurations (2008–2014)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Express 1500 \/ 2500 \/ 3500:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 4.3L V6, 4.8L, 5.3L, 6.0L V8 Cargo \u0026amp; Passenger Vans (2008–2016)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Avalanche:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 5.3L \/ 6.0L V8 (2008–2013)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Colorado:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 5.3L V8 (2009–2012)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Corvette:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 6.2L \/ 7.0L V8 (2008–2013)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Camaro:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 6.2L V8 (2010–2015)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eChevy Impala:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 3.6L V6 \/ 5.3L V8 (2008–2011)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"AdPoic\" role=\"heading\"\u003e2. GMC Fitment List\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eGMC Sierra 1500 \/ 2500 HD \/ 3500 HD:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 4.8L, 5.3L, 6.0L, 6.2L V8 powertrains (2008–2014)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eGMC Yukon \/ Yukon XL 1500 \/ Yukon XL 2500:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e V8 displacements (2008–2014)\u003cspan\u003eSelect V8 engine configurations; verify engine size and OE numbers before ordering\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eGMC Savana 1500 \/ 2500 \/ 3500 \/ 4500:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Full-sized van applications (2008–2016)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eGMC Canyon:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 5.3L V8 configurations (2009–2012)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"AdPoic\" role=\"heading\"\u003e3. Cadillac Fitment List\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eCadillac Escalade \/ Escalade ESV \/ Escalade EXT:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 6.2L V8 high-output variants (2008–2014)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eCadillac CTS \/ CTS-V Performance Series:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 6.2L Supercharged V8 models (2009–2015)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"AdPoic\" role=\"heading\"\u003e4. Other GM Partner Brands\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eHummer H3 \/ H3T:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 5.3L V8 models (2008–2010)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003ePontiac G8:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e 6.0L \/ 6.2L V8 performance sedans (2008–2009)\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003chr class=\"s6NV4e\"\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003cstrong\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\n\u003cstrong\u003e\u003cspan class=\"token maybe-class-name\"\u003eRelated\u003c\/span\u003e \u003cspan class=\"token maybe-class-name\"\u003eDiagnostic\u003c\/span\u003e \u003cspan class=\"token maybe-class-name\"\u003eTrouble\u003c\/span\u003e \u003cspan class=\"token maybe-class-name\"\u003eCodes\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\n\u003cspan\u003eA faulty downstream oxygen sensor may contribute to the diagnostic trouble codes below. These codes can also be caused by wiring faults, exhaust leaks, fuel-system issues, or catalytic-converter problems. Proper diagnosis is recommended before replacing any sensor.\u003c\/span\u003e\u003cbr\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eP0141 \/ P0161:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Downstream O2 Sensor Heater Circuit Malfunction (Bank 1 or Bank 2, Sensor 2) — Indicates that the internal heating circuit inside the 234-4256 replacement has failed, preventing it from reaching optimal closed-loop diagnostic temperatures.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eP0136 \/ P0156:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Downstream O2 Sensor Circuit Malfunction (Bank 1 or Bank 2, Sensor 2) — Signals an open circuit or physical harness damage underneath the vehicle frame rails.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eP0138 \/ P0158:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Downstream O2 Sensor Circuit High Voltage — Triggered when the sensor output stays abnormally high, indicating an electrical short to voltage or a continuous, uncorrected rich tailpipe condition.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eP0420 \/ P0430:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e \u003cspan\u003eThese codes often indicate a catalytic-converter or exhaust-system problem. A slow or faulty downstream sensor can sometimes contribute to an inaccurate reading, but these codes do not confirm that the oxygen sensor is faulty.\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"yepzparts","offers":[{"title":"Default Title","offer_id":49152529825946,"sku":"GM-O2-4256-2PK","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0768\/0717\/6346\/files\/13.png?v=1788180010","url":"https:\/\/www.yepzparts.com\/products\/premium-aftermarket-o2-sensor-234-4256-for-chevy-silverado-tahoe-gmc-sierra-2pcs","provider":"yepzparts","version":"1.0","type":"link"}