The 2012 Chevrolet Silverado 1500 came with the 5.3L Vortec V8 engine (RPO code LMG), which produces 315 horsepower and 335 lb-ft of torque. This aluminum block engine features Active Fuel Management (AFM) cylinder deactivation technology and variable valve timing for improved fuel economy. The 5.3L is paired with a 6-speed automatic transmission and offers decent towing capacity of up to 10,700 pounds when properly equipped. This engine uses regular unleaded gasoline and achieves approximately 15 mpg city and 21 mpg highway in 2WD configurations.

The 2012 Silverado 1500 shares most parts with the 2007-2013 GMT900 generation trucks. Major components like engines, transmissions, suspension parts, and body panels interchange across these years with minimal differences. Some electrical components and interior trim pieces may have minor variations between early and late production years. The 5.3L engine components are also compatible with Tahoe, Suburban, Yukon, and Escalade models from the same generation. Always verify part numbers and RPO codes for critical components, as mid-cycle refreshes can affect compatibility for items like headlights, grilles, and electronic modules.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The 5.3L Vortec is generally reliable but has known issues with the Active Fuel Management system that can cause expensive lifter failures. With proper maintenance including regular oil changes every 5,000 miles using quality oil, many engines reach 200,000+ miles. Disable the AFM system early to prevent lifter problems, and replace the intake manifold gaskets proactively around 100,000 miles. The engine responds well to preventive maintenance and can be very durable when the AFM-related issues are addressed. Overall, it’s a capable workhorse engine that serves truck owners well when maintained properly.