All models are powered by a Vortec 5.3L V-8 that balances power and efficiency. Variable valve timing helps the 5.3L optimize performance, efficiency and emissions, while GM's Active Fuel Management cylinder deactivating technology helps improve fuel economy in certain light-load driving conditions. It is also E85-capable and matched with GM's Hydra-Matic 6L80 six-speed automatic transmission.

Click the attached link below to view the complete factory technical specifications of the 2012 Chevrolet Avalanche in .pdf format.