This is a PCM/ECM (12649652) for a 2011 Chevy Silverado 2500. It is a Bolt-On type with a Pin terminal and three terminal quantities. The item weighs 8 lbs. It is compatible with Chevrolet brand vehicles. This product is perfect for those who need to replace their malfunctioning PCM/ECM. It falls under the category of eBay Motors, Parts & Accessories, Car & Truck Parts & Accessories, Starters, Alternators, ECUs & Wiring, and ECUs & Computer Modules.