Base MSRP $338,255 Engine 3.0L Twin-Turbo V6 Plug-in Hybrid Horsepower 819 hp When it comes to the highest-revving V6 engine ...

Perhaps the most significant element of the model update is the introduction of the ‘Duramax 2’ 2.8-litre turbo-diesel engine. Power is boosted to 147kW and torque peaks at 500Nm when matched ...