* 5.3L V8: This engine produced approximately 335 lb-ft of torque.
* 6.2L V8: This engine produced approximately 403 lb-ft of torque.
Therefore, the answer is either 335 lb-ft or 403 lb-ft, depending on the engine in your specific 2011 Suburban. Check your vehicle's documentation or the sticker inside the driver's side doorjamb to identify the engine.