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REPLACEMENT VALLEY COVER PLATE KIT - Non AFM/DOD Aluminum Plate Cover - eliminates common issues caused by the problematic Active Fuel Management (AFM) or the Displacement on Demand (DOD) system on your LS Gen IV engine. By deactivating cylinders under light load conditions, these systems ensure the engine operates smoothly without complications, prevent potential future issues, and improve fuel efficiency. COMPATIBLE REPLACEMENT FOR CADILLAC, CHEVROLET, GMC, HUMMER & SAAB NON AFM/DOD VEHICLES - Gen IV LS2, LS3, LS7, L92 with 4.8L, 5.3L, 6.0L, 6.2L Engines - 2007-2009 Escalade, ESV, EXT 6.2L | 2009-2012 Colorado 5.3L | 2008-2014 Express 1500 5.3L | 2008-2017 Express 2500, 3500 4.8L | 2008-2020 Express 2500, 3500 6.0L | 2007-2013 Silverado 1500 4.8L | 2009-2013 Silverado 1500 6.2L | & more. See below for a full vehicle list. REPLACES PART# 12598832, 12610141, 12558178, MS19328 usually found on popular Escalade, Escalade ESV, Escalade EXT, Colorado, Express 1500, Express 2500, Express 3500, Express 4500, Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, Suburban 2500, Suburban 3500 HD, Tahoe, and Trailblazer with 4.8, 5.3, 6.0, 6.2 liter engines, including year models 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20. OEM FIT, QUALITY & FINISH - While this valley pan plate is not a genuine OEM part, it is a direct replacement and will fit, work, and look exactly like the factory part. This valley cover plate kit from AA Ignition comes with a new valley cover plate, gasket, bolts and o-rings for a complete and proper installation. Save time and hundreds of dollars off dealer prices by purchasing this part from AA Ignition. LIFETIME WARRANTY - This valley pan cover plate kit or AFM / DOD plate comes complete with a lifetime warranty. If the part ever fails on your Canyon, Savana 1500, Savana 2500, Savana 3500, Savana 4500, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500, H2, H3, H3T, or 9-7x vehicle models, simply contact us for a free replacement. See our website for full details.