2012 GMC Truck Sierra 3500 Engine — Part # 00019989 — St.James Auto & Truck Parts-ARA Gold Seal, URG, Team PRP · St.James, MO

When considering an engine replacement for your 2012 GMC Truck Sierra 3500, one critical factor often overlooked is the engine's compatibility with your vehicle's transmission and emissions standards. This listing features a 6.6L engine designed for automatic transmission (LML), which is essential to verify against your truck's current setup to ensure seamless integration and performance. This engine is a used part graded as 'C' by the seller, indicating it may show signs of wear or require some refurbishment. The engine is specifically from a 2012 GMC Truck Sierra 3500, ensuring it matches the donor vehicle's specifications. The seller notes an estimated CO2e savings of 1194kg, which might be relevant if you are considering environmental impact or regulatory compliance. Before purchasing, compare this engine's specifications with your existing engine, especially regarding the transmission type and emission controls. Confirm the engine's serial numbers and physical condition with the seller to avoid compatibility issues. The seller stock identifier for this part is 00019989, useful for referencing this exact unit when communicating with the seller. For more GMC parts compatible with your vehicle, you can explore the GMC parts section. If you are ready to proceed with this engine replacement, ensure you have verified all compatibility factors and inspected the engine condition thoroughly. This preparation will help you avoid costly returns or installation problems. Reach out to the seller with any questions or to request additional photos or testing information before finalizing your purchase.