Walker Products Engine Management and Oxygen/Air-Fuel sensors have been engineered and developed to be an Original Equipment Manufacturers replacement for many vehicles worldwide. Every part number is manufactured for the specific application, fitment position on the vehicle, and will provide the relevant diagnostic system feedback as required by the ECU. Newer vehicles will store fault codes in the ECU, some will relate to the affected sensor and its associated systems. A failed sensor might make itself known by causing the engine to run poorly, increase fuel consumption, exhaust emissions, or illuminating a (MIL) malfunction indicator light. The sensor, wiring harness, and connector should also be checked for physical damage. This will most likely also cause their operational life to be shortened. We are an Automotive ISO9001/TS 16949 certified company, with un-paralleled customer service, marketing, and shipping. Our electronic and paper catalogs are designed for todays fast paced marketplace, along with our eye catching packaging. Since 1946, Walker Products has been the number one choice for the engine management sensors and fuel system components needed for your vehicle. Vehicle Fitment: 2013-2020 GMC Acadia 2.5L, Cadillac ATS 2.0L, 2.5L, 3.6L, Chevrolet Blazer 2.5L, Chevrolet Camaro 3.6L, 6.2L, GMC Canyon 2.5L, Buick Cascada 1.6L, Chevrolet Colorado 2.5L, Chevrolet Corvette 6.2L, Cadillac CT6 3.0L, 3.6L, Cadillac CTS 2.0L, 3.6L, 6.2L, Buick Envision 2.0L, 2.5L, Cadillac Escalade 6.2L, Chevrolet Express 4500 6.0L, Chevrolet Impala 2.5L, Buick LaCrosse 2.5L, Chevrolet LCF 3500 6.0L, Chevrolet Malibu Limited 2.5L, Chevrolet Malibu 1.8L, 2.0L, 2.5L, Buick Regal 2.0L, GMC Sierra 1500 Limited 5.3L, GMC Sierra 2500 HD 6.0L, GMC Sierra 3500 HD 6.0L, Chevrolet Silverado 2500 HD 6.0L, Chevrolet Silverado 3500 HD 6.0L, Chevrolet Silverado 3500 6.0L, Chevrolet Suburban 3500 HD 6.0L, Chevrolet Suburban 5.3L, 6.0L, 6.2L, Chevrolet Tahoe 5.3L, 6.2L, GMC Yukon XL 5.3L, 6.2L, GMC Yukon 5.3L, 6.2L