All Silverados come with a four-speed automatic transmission; what changes is the engine to which it’s connected. Powertrain choices start with a 4.3-liter V6 engine, standard on the WT Regular Cab and 2WD Extended Cab models. One step up is a 4.8-liter V8 engine, standard on WT 4WD Extended Cab, LT Regular Cab, Extended Cabs and WT and LT crew cab models; that’s followed by a 5.3-liter FlexFuel V8, available on all models; a 5.3-liter V8, available on all models and a 5.3-liter V8 with Active Fuel Management on Crew Cab 4WD models. The 5.3-liter V8 is standard on LT and LTZ models and available on all other trims, and a 6.0-liter V8 with Active Fuel Management is part of the LT and LTZ Extended and Crew Cab Maximum Trailering Package.

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