2025 GMC Sierra 3500HD AT4

2025 GMC Sierra 3500HD AT4 4WD Sterling Metallic Off-Road Power Meets Heavy-Duty Capability Whitaker GMC in Forest Lake, MNGet the strength to tackle the toughest jobs and the refinement to enjoy every mile in this 2025 GMC Sierra 3500HD AT4 4WD finished in Sterling Metallic with premium Jet Black leather with Kalahari accents. Equipped with the AT4 Premium Plus Package, advanced trailering technology, and off-road upgrades, this Sierra HD AT4 is built for both work and adventure.Performance & Capability:10-Speed Automatic Transmission, 4WD with 2-Speed Active Transfer CaseX31 Off-Road Package with Hill Descent Control & Skid PlatesGooseneck/5th Wheel Prep Package & Snow Plow Prep/Camper PackageHeavy-Duty Suspension, 220-Amp Alternator, Spray-On Bedliner with GMC LogoOff-Road High Clearance Step (LPO) for rugged accessibilityTrailering & Utility Features:Bed View Camera with 2 Trailer Camera ProvisionsTrailer Side Blind Zone Alert, Ultrasonic Front & Rear Park AssistTrailer Camera Provisions with Advanced Trailer Viewing SoftwareRear Cross Traffic Alert, Hitch Guidance & Integrated Trailer Brake ControllerLuxury & Interior Comfort:Heated & Ventilated Front Seats, Heated 2nd Row Outboard SeatsHeated Steering Wheel, Memory Drivers Seat, Floor-Mounted Center ConsolePower Moonroof & Power Sliding Rear Window with DefoggerBose Premium 7-Speaker Sound System, Wireless ChargingMulticolor 15 Diagonal Head-Up Display & Universal Home RemoteTechnology & Safety:HD Surround Vision & Auto-Dimming Rearview Mirror with Integrated CameraLane Departure Warning System, Safety Alert SeatForward Collision Safety Systems with Rear Pedestrian ProtectionTechnology Package with advanced driver assistance & display featuresOnStar Services Capable, SiriusXM with 360L Trial SubscriptionExterior & Design Highlights:Sterling Metallic Finish with Gloss Black Header & Grille Insert BarsLED Cargo Area Lighting & Smoked Amber Roof Marker LampsAT4 Premium Plus Package & AT4 Preferred Package for added refinementWhether youre towing, hauling, or exploring the backcountry, the 2025 GMC Sierra 3500HD AT4 4WD combines heavy-duty performance with premium comfort and next-level technology.Whitaker GMC Forest Lake, MN | Proudly serving the Twin Cities and greater Minnesota with premium GMC trucks and SUVs.Call today or visit us online to schedule your test drive of the 2025 GMC Sierra 3500HD AT4 4WD Sterling Metallic and experience the AT4 difference.Includes The Whitaker Lifetime Powertrain Warranty!

• REAR CAMERA MIRROR inside rearview auto-dimming with full camera display
• GOOSENECK / 5TH WHEEL PREP PACKAGE -- Hitch platform to accept Gooseneck or 5th Wheel hitch. Includes hitch platform with tray to accept ball stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness).
• LICENSE PLATE KIT FRONT
• TIRES LT275/65R20 ALL-TERRAIN BLACKWALL (STD)
• AUDIO SYSTEM 13.4 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM with Google built in apps such as navigation and voice assistance includes color touch-screen multi-touch display AM/FM stereo Bluetooth streaming audio for music and most phones
• featuring wireless Android Auto and Apple CarPlay capability for compatible phones. (STD)
• TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display
• TRANSMISSION ALLISON 10-SPEED AUTOMATIC
• WHEELS 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS 8 SPOKES
• HIGH IDLE SWITCH
• ENGINE DURAMAX 6.6L TURBO-DIESEL V8 B20-DIESEL COMPATIBLE (470 hp [350.5 kW] @ 2800 rpm 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.)
• WINTER GRILLE COVER
• TRAILER TIRE PRESSURE MONITOR SENSORS includes set of 4 sensors. Sensor functionality requires (UET) In-vehicle Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories
• WINDOW POWER REAR SLIDING with rear defogger
• SNOW PLOW PREP/CAMPER PACKAGE includes (KW5) 220-amp alternator includes increased front GAWR on Heavy Duty models (NZZ) skid plates (transfer case and oil pan) pass through dash grommet hole and roof emergency light provisions. Contact GM Upfitter Integration at www.gmupfitter.com for plow installation details and assistance. Note: if ordered for Camper usage recommend ordering (UY2) Trailering wiring provisions (Includes (KW5) 220-amp alternator
• UNIVERSAL HOME REMOTE
• ENGINE BLOCK HEATER
• SUNROOF POWER
• AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
• LAMPS SMOKED AMBER ROOF MARKER (LED)
• STERLING METALLIC
• LPO OFF-ROAD HIGH CLEARANCE STEP (dealer-installed)
• AT4 PREMIUM PLUS PACKAGE includes (PDO) AT4 Preferred Package (CF5) power sunroof (CWM) Technology Package and (VXW) Off-Road High Clearance step LPO
• REAR AXLE 3.42 RATIO
• GVWR 12 100 LBS. (5488 KG) WITH SINGLE REAR WHEELS
• EXHAUST BRAKE
• AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote (A48) rear sliding power window and (U01) Roof Marker Lamps
• ALTERNATOR 220 AMPS
• SEATS FRONT BUCKET WITH CENTER CONSOLE (STD)
• MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY
• JET BLACK WITH KALAHARI ACCENTS PERFORATED FRONT LEATHER SEATING SURFACES
• Lane Departure Warning
• Front Collision Mitigation
• Front Collision Warning
• Automatic Highbeams
• Tow Hitch
• Running Boards/Side Steps
• Keyless Start
• Locking/Limited Slip Differential
• Four Wheel Drive
• Tow Hooks
• Power Steering
• ABS
• 4-Wheel Disc Brakes
• Aluminum Wheels
• Tires - Front All-Terrain
• Tires - Rear All-Terrain
• Conventional Spare Tire
• Bed Liner

• Daytime Running Lights
• LED Headlights
• Automatic Highbeams
• Fog Lamps
• Heated Mirrors
• Power Mirror(s)
• Integrated Turn Signal Mirrors
• Power Folding Mirrors
• Intermittent Wipers
• Variable Speed Intermittent Wipers
• Rain Sensing Wipers
• Privacy Glass
• Integrated Tailgate Step
• AM/FM Stereo
• Navigation System
• MP3 Capability
• Bluetooth Connection
• Auxiliary Audio Input
• Smart Device Integration
• Satellite Radio
• Requires Subscription
• Satellite Radio
• Requires Subscription
• Premium Sound System
• Bluetooth Connection
• Bluetooth Connection
• Smart Device Integration
• WiFi Hotspot
• Bucket Seats
• Leather Seats
• Power Driver Seat
• Driver Adjustable Lumbar
• Power Passenger Seat
• Passenger Adjustable Lumbar
• Pass-Through Rear Seat
• Rear Bench Seat
• Heated Front Seat(s)
• Heated Front Seat(s)
• Cooled Front Seat(s)
• Heated Rear Seat(s)
• Mirror Memory
• Seat Memory
• Floor Mats
• Floor Mats
• Heated Steering Wheel
• Adjustable Steering Wheel
• Steering Wheel Audio Controls
• Tire Pressure Monitor
• Power Windows
• Power Windows

• Power Door Locks
• Remote Engine Start
• Keyless Entry
• Power Door Locks
• Keyless Start
• Cruise Control
• Adaptive Cruise Control
• Security System
• MP3 Capability
• Auxiliary Audio Input
• MP3 Capability
• Auxiliary Audio Input
• Climate Control
• Multi-Zone A/C
• A/C
• Rear Defrost
• Auto-Dimming Rearview Mirror
• Front Collision Mitigation
• Front Collision Warning
• Traction Control
• Stability Control
• Daytime Running Lights
• Daytime Running Lights
• Driver Air Bag
• Passenger Air Bag
• Front Side Air Bag
• Front Head Air Bag
• Rear Head Air Bag
• Passenger Air Bag Sensor
• Telematics
• Requires Subscription
• Rear Parking Aid
• Back-Up Camera
• Aerial View Display System
• Back-Up Camera
• Cross-Traffic Alert
• Blind Spot Monitor
• Lane Departure Warning
• Front Collision Warning
• Front Collision Mitigation
• Driver Restriction Features
• Tire Pressure Monitor
• Navigation System
• Telematics
• Requires Subscription