Experience The Diamond Difference. If you're looking for a vehicle that delivers on performance, utility, comfort, or value, this 2015 GMC Sierra 2500HD SLE may be just the ticket... Vehicle Highlights: SLE DecorPower Windows with Driver Express Up and DownRear 60/40 Folding Bench Seat (folds Up)Deep-Tinted GlassRemote Keyless EntryFront 40/20/40 Reclining Split-Bench SeatRear Wheelhouse LinersColor-Keyed Carpeting Floor CoveringBody Color Bodyside MoldingsBody-Color Door HandlesDriver and Front Passenger VisorsBody-Color Power-Adjustable Heated Outside MirrorsBody-Color Mirror CapsHigh-Capacity Air CleanerLeather-Wrapped Steering WheelElectronic Shift Transfer CaseEZ-Lift and Lower TailgateCloth Seat TrimSingle Slot CD/MP3 Player4.2" Diagonal Color Display Driver Info CenterOnStar 6 Months Directions/Connections PlanLED Cargo Box LightingSteering Wheel Audio ControlsRear Vision Camera with Dynamic Guide LinesOnStar 4G LTE Wi-Fi HotspotHeavy-Duty Trailering EquipmentSLE DecorPower Windows with Driver Express Up and DownRear 60/40 Folding Bench Seat (folds Up)Deep-Tinted GlassRemote Keyless EntryFront 40/20/40 Reclining Split-Bench SeatRear Wheelhouse LinersColor-Keyed Carpeting Floor CoveringBody Color Bodyside MoldingsBody-Color Door HandlesDriver and Front Passenger VisorsBody-Color Power-Adjustable Heated Outside MirrorsBody-Color Mirror CapsHigh-Capacity Air CleanerLeather-Wrapped Steering WheelElectronic Shift Transfer CaseEZ-Lift and Lower TailgateCloth Seat TrimSingle Slot CD/MP3 Player4.2" Diagonal Color Display Driver Info CenterOnStar 6 Months Directions/Connections PlanLED Cargo Box LightingSteering Wheel Audio ControlsRear Vision Camera with Dynamic Guide LinesOnStar 4G LTE Wi-Fi HotspotHeavy-Duty Trailering EquipmentSLE Preferred Package ($1,450 value)10-Way Power Driver Seat AdjusterRemote Vehicle Starter SystemElectric Rear-Window DefoggerDual-Zone Automatic Climate Control110-Volt AC Power OutletManual Tilt-Wheel/telescoping Steering ColumnFront Halogen Fog LampsUniversal Home RemoteSLE DecorPower Windows with Driver Express Up and DownRear 60/40 Folding Bench Seat (folds Up)Deep-Tinted GlassRemote Keyless EntryFront 40/20/40 Reclining Split-Bench SeatRear Wheelhouse LinersColor-Keyed Carpeting Floor CoveringBody Color Bodyside MoldingsBody-Color Door HandlesDriver and Front Passenger VisorsBody-Color Power-Adjustable Heated Outside MirrorsBody-Color Mirror CapsAM/FM/SiriusXM RadioHigh-Capacity Air CleanerLeather-Wrapped Steering WheelElectronic Shift Transfer CaseEZ-Lift and Lower Tailgate17" Machined Aluminum WheelsCloth Seat TrimSingle Slot CD/MP3 Player4.2" Diagonal Color Display Driver Info CenterOnStar 6 Months Directions/Connections PlanLED Cargo Box LightingSteering Wheel Audio ControlsRear Vision Camera with Dynamic Guide LinesOnStar 4G LTE Wi-Fi HotspotHeavy-Duty Trailering Equipment Convenience Cruise control with steering wheel mounted controls. Set it and forget it. Road trips used to be stressful, until cruise control set the pace. Simply set the desired speed using the steering wheel mounted controls and it will maintain that speed without driver intervention. This can help minimize driver fatigue and improve overall fuel economy. Resting your right foot is right at your fingertips thanks to cruise control with steering wheel mounted controls.Safety and Security Rear camera - Watching your back! The rear camera helps you see obstacles and hazards you otherwise couldn't by showing enhanced images of what is behind you. The rear camera is an extra set of eyes that's both convenient and safe. Brake assist - Stop right there. Something jumps out into the middle of the road and you need to stop now! With brake assist, you will. It uses the speed of the brake pedals travel to sense panic braking, then applies all available power to boost your stopping power. Brake assist can stop the accident before it is one.Technology and Telematics Mobile hotspot - WiFi on the fly. Connect your devices to the Intern