Redesigned for 2015, the GMC Sierra 3500HDs are offered in 4x2 and 4x4 models with either a single rear wheel (SRW) or a double rear wheel configuration if extra payload and/or towing requirements are needed. The bold new exterior houses a choice of gas or bi-fuel (gasoline and CNG) 6.0-liter V8 or Duramax 6.6-liter diesel engines, a fully updated cabin with available IntelliLink connectivity and other features designed for the most discerning truck owners. GMC designers evolved the Sierra 3500HD's familiar shape while adding distinctive details like standard projector headlamps, available LED signature accent lighting and detailed new grilles. All … Full Review
Redesigned for 2015, the GMC Sierra 3500HDs are offered in 4x2 and 4x4 models with either a single rear wheel (SRW) or a double rear wheel configuration if extra payload and/or towing requirements are needed. The bold new exterior houses a choice of gas or bi-fuel (gasoline and CNG) 6.0-liter V8 or Duramax 6.6-liter diesel engines, a fully updated cabin with available IntelliLink connectivity and other features designed for the most discerning truck owners. GMC designers evolved the Sierra 3500HD's familiar shape while adding distinctive details like standard projector headlamps, available LED signature accent lighting and detailed new grilles. All … Hide Full Review