The 2011 Silverado 1500 4x4 typically comes with a 6-speed automatic transmission, paired with either a V6 or V8 engine. This transmission delivers smooth shifting, strong towing capability, and reliable performance for daily driving and work use. https://turboautoparts.com/used-transmission/chevy/silverado-1500/2011/at-4.3l-4x4-id-0aaw