New 2026 GMC Sierra 2500HD AT4
- VIN: 1GT4UPEY6TF278903
- Stock: G14490
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Details
New 2026 GMC Sierra 2500HD AT4
VIN: 1GT4UPEY6TF278903STOCK: G14490Basic Info
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Exterior:Onyx Black
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Drivetrain:4WD
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Interior:Jet Black with Kalahari accents
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Transmission:10-Speed A/T
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Engine:6.6L 8 Cylinder Engine
Key Features
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AWD
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Adaptive Cruise Control
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Android Auto
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Apple CarPlay
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Automatic Climate Control
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Backup Camera
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Blind Spot Monitor
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Bluetooth
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Fog Lights
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Forward Collision Warning
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Heated Seats
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Keyless Entry
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Lane Departure Warning
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Leather Seats
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Navigation System
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Parking Sensors / Assist
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Power Seats
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Rain Sensing Wipers
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Remote Start
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Satellite Radio Ready
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Side-Impact Air Bags
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Sunroof / Moonroof
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Tow Package
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WiFi Hotspot
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Wireless Phone Charging
Description
Moonroof, Heated Leather Seats, Navigation, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8... Heated Rear Seat, 4x4, AUDIO SYSTEM, 13.4 DIAGONAL PREMIUM.. Bed Liner. Onyx Black exterior and Jet Black with Kalahari accents interior, AT4 trim.
KEY FEATURES INCLUDE
Leather Seats, 4x4, Heated Driver Seat, Heated Rear Seat, Cooled Driver Seat, Premium Sound System, Satellite Radio, Onboard Communications System, Trailer Hitch, Aluminum Wheels. Privacy Glass, Keyless Entry, Steering Wheel Controls, Heated Mirrors. GMC AT4 with Onyx Black exterior and Jet Black with Kalahari accents interior features a 8 Cylinder Engine with 470 HP at 2800 RPM*.
OPTION PACKAGES
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.), TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display, LPO, SPORT STEP, BLACK (dealer-installed), SUNROOF, POWER, AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote, (A48) rear sliding power window and (U01) Roof Marker Lamps, 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), TRANSMISSION, 10-SPEED AUTOMATIC.
Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.
KEY FEATURES INCLUDE
Leather Seats, 4x4, Heated Driver Seat, Heated Rear Seat, Cooled Driver Seat, Premium Sound System, Satellite Radio, Onboard Communications System, Trailer Hitch, Aluminum Wheels. Privacy Glass, Keyless Entry, Steering Wheel Controls, Heated Mirrors. GMC AT4 with Onyx Black exterior and Jet Black with Kalahari accents interior features a 8 Cylinder Engine with 470 HP at 2800 RPM*.
OPTION PACKAGES
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.), TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display, LPO, SPORT STEP, BLACK (dealer-installed), SUNROOF, POWER, AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote, (A48) rear sliding power window and (U01) Roof Marker Lamps, 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), TRANSMISSION, 10-SPEED AUTOMATIC.
Horsepower calculations based on trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.
Vehicle Details
Exterior
- Tire, spare LT275/70R18 all-terrain, blackwall
- Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
- Bumper, front, body-color lower
- Bumper, rear body-color with bumper CornerSteps
- Bed Step, Black integrated on forward portion of bed on driver and passenger side
- CornerStep, rear bumper
- Cargo tie downs (12), fixed, rated at 500 lbs per corner
- Wheelhouse liners, rear
- Moldings, beltline, Black
- Grille (Gloss Black header and grille insert bars with Black Chrome accents.)
- Fog lamps, LED
- Lamps, cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
- LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
- Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
- Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm]) lighting
- Mirror caps, high gloss Black
- Glass, deep-tinted
- Wipers, front rain-sensing
- Door handles, body-color
- Tailgate, GMC MultiPro Tailgate with six functional load/access features NOTE: Auto release can be disabled if ball hitch is installed. See Owner's manual for details
- Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
- Tailgate and bed rail protection caps, top
Interior
- Seat, Up-level Rear with Storage Package 60/40 folding bench, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)
- Seat adjuster, driver 10-way power including lumbar
- Seat adjuster, passenger 10-way power including lumbar
- Seats, heated second row outboard seats
- Driver memory recalls driver "presets" for power driver seat and outside mirrors
- Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
- Floor covering, color-keyed carpeting
- Steering wheel, wrapped
- Steering wheel, heated
- Steering wheel audio controls
- Steering column, manual Tilt-Wheel and telescoping
- Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
- Rear Seat Reminder
- GMC Premium information Display- 13.4" diagonal Multicolor touch screen
- Exterior Temperature Display, located in radio display
- Compass, located in instrument cluster
- Remote vehicle starter system
- Adaptive Cruise Control
- Wireless Charging
- Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
- USB ports, (2) charge-only, rear
- Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
- Air vents, rear
- Air conditioning, dual-zone automatic climate control
- Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
Mechanical
- Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
- GVWR, 10,850 lbs. (4921 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18", 20" or 22" wheels.)
- Hill Descent Control
- Transfer case, two-speed active, electronic Autotrac with push button control
- Auto-locking rear differential
- Four wheel drive
- Cooling, external engine oil cooler
- Cooling, auxiliary external transmission oil cooler
- Air filter, heavy-duty
- Air filtration monitoring
- Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)
- Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
- Trailer brake controller, integrated
- In-Vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitor sensors are installed.)
- Recovery hooks, Red
- Skid Plates protect the oil pan, front axle and transfer case
- Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
- Suspension, Off-Road includes twin-tube shocks
- Steering, Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
- Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
- Brake lining wear indicator
- Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
Safety
- StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
- Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
- Front and Rear Park Assist, ultrasonic
- Bed View Camera, camera in the CHMSL to show a view of the cargo bed display located in infotainment screen, includes Two Trailer Camera Provisions
- Trailer Camera Provisions and trailer viewing software
- Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
- Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
- Rear Seat Belt Indicator
- Rear Cross Traffic Alert
- Trailer Side Blind Zone Alert
- Seat Belt Adjustable Guide Loops, front row only
- Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety.)
- Safety Alert Seat
- Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
- Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
Tech Specs
- Vehicle Name: GMC Sierra 2500HD
- Body Style: Crew Cab Pickup
- Body Code: E63
- Drivetrain: Four Wheel Drive
- Passenger Capacity: 5
- Gross Axle Wt Rating - Front: 5600
- Gross Axle Wt Rating - Rear: - TBD -
- Curb Weight - Front: 4013
- Curb Weight - Rear: 2812
- Gross Vehicle Weight Rating Cap: 10850
- Fuel Economy Est-Combined:
- EPA Fuel Economy Est - City:
- EPA Fuel Economy Est - Hwy:
- Tons/yr of CO2 Emissions @ 15K mi/year:
- Gross Combined Wt Rating: 27500
- Dead Weight Hitch - Max Trailer Wt.: 5000
- Dead Weight Hitch - Max Tongue Wt.: 500
- Wt Distributing Hitch - Max Trailer Wt.: 18500
- Wt Distributing Hitch - Max Tongue Wt.: 1850
- Fifth Wheel Hitch - Max Trailer Wt.: 17300
- Fifth Wheel Hitch - Max Tongue Wt.: 4325
- Maximum Trailering Capacity: 20000
- Engine Order Code: L5P
- Engine Type: Turbocharged Diesel V8
- Displacement: 6.6L/- TBD -
- Fuel System: Direct Injection
- SAE Net Horsepower @ RPM: 470 @ 2800
- SAE Net Torque @ RPM: 975 @ 1600
- Trans Order Code: MKM
- Trans Type: 10
- Trans Description Cont.: Automatic
- Trans Description Cont. Again:
- First Gear Ratio (:1): 4.54
- Second Gear Ratio (:1): 2.87
- Third Gear Ratio (:1): 2.06
- Fourth Gear Ratio (:1): 1.72
- Fifth Gear Ratio (:1): 1.48
- Sixth Gear Ratio (:1): 1.26
- Seventh Gear Ratio (:1): 1.00
- Eighth Gear Ratio (:1): 0.85
- Ninth Gear Ratio (:1): 0.69
- Tenth Gear Ratio (:1): 0.63
- Reverse Ratio (:1): 4.54
- Clutch Size:
- Trans Power Take Off:
- Trans PTO Access:
- Transfer Case Model: - TBD -
- Transfer Case Gear Ratio (:1), High: 1
- Transfer Case Gear Ratio (:1), Low: - TBD -
- Transfer Case Power Take Off:
- Cold Cranking Amps @ 0° F (Primary): 720
- Cold Cranking Amps @ 0° F (2nd):
- Maximum Alternator Capacity (amps): 170
- Maximum Alternator Watts:
- Total Cooling System Capacity: - TBD -
- Engine Oil Cooler: Yes
- Frame Type: Box Ladder
- Suspension Type - Front: Short/Long Arm w/Torsion Bar
- Suspension Type - Rear: 2-Stage Multi-Leaf
- Spring Capacity - Front: - TBD -
- Spring Capacity - Rear: - TBD -
- Axle Type - Front: - TBD -
- Axle Type - Rear: - TBD -
- Axle Capacity - Front: - TBD -
- Axle Capacity - Rear: - TBD -
- Axle Ratio (:1) - Front: 3.73
- Axle Ratio (:1) - Rear: 3.73
- Shock Absorber Diameter - Front: 51
- Shock Absorber Diameter - Rear: 51
- Stabilizer Bar Diameter - Front: 1.38
- Stabilizer Bar Diameter - Rear:
- Front Tire Order Code: QF9
- Rear Tire Order Code: QF9
- Spare Tire Order Code: ZYG
- Front Tire Size: LT275/65R20
- Rear Tire Size: LT275/65R20
- Spare Tire Size: LT275/70R18
- Front Tire Capacity: - TBD -
- Rear Tire Capacity: - TBD -
- Spare Tire Capacity: - TBD -
- Revolutions/Mile @ 45 mph - Front: - TBD -
- Revolutions/Mile @ 45 mph - Rear: - TBD -
- Revolutions/Mile @ 45 mph - Spare: - TBD -
- Front Wheel Size: 20 x - TBD -
- Rear Wheel Size: 20 x - TBD -
- Spare Wheel Size: 18 x - TBD -
- Front Wheel Material: Aluminum
- Rear Wheel Material: Aluminum
- Spare Wheel Material: - TBD -
- Steering Type: Pwr Recirculating Ball
- Steering Ratio (:1), On Center: - TBD -
- Steering Ratio (:1), At Lock: - TBD -
- Turning Diameter - Curb to Curb: 52.7
- Turning Diameter - Wall to Wall: - TBD -
- Brake Type: Pwr
- Brake ABS System: 4-Wheel
- Brake ABS System (Second Line):
- Disc - Front (Yes or ): Yes
- Disc - Rear (Yes or ): Yes
- Front Brake Rotor Diam x Thickness: 14 x 1.6
- Rear Brake Rotor Diam x Thickness: 14.1 x 1.3
- Drum - Rear (Yes or ):
- Rear Drum Diam x Width:
- Fuel Tank Capacity, Approx: 36
- Aux Fuel Tank Capacity, Approx:
- Fuel Tank Location: - TBD -
- Aux Fuel Tank Location:
- Front Head Room: 43.03
- Front Leg Room: 44.53
- Front Shoulder Room: 66.02
- Front Hip Room: 61.18
- Second Head Room: 40.12
- Second Leg Room: 43.4
- Second Shoulder Room: 65.3
- Second Hip Room: 60.24
- Wheelbase: 158.94
- Length, Overall: 250.75
- Width, Max w/o mirrors: 81.85
- Height, Overall: 79.82
- Overhang, Front: - TBD -
- Overhang, Rear w/o bumper: - TBD -
- Front Bumper to Back of Cab: - TBD -
- Cab to Axle: 42.17
- Cab to End of Frame: - TBD -
- Ground to Top of Load Floor: - TBD -
- Ground to Top of Frame: - TBD -
- Frame Width, Rear: - TBD -
- Ground Clearance, Front: 10.12
- Ground Clearance, Rear: 10.12
- Cargo Box Length @ Floor: 82.2
- Cargo Box Width @ Top, Rear: - TBD -
- Cargo Box Width @ Floor: 71.4
- Cargo Box Width @ Wheelhousings: 51.85
- Cargo Box (Area) Height: 21
- Tailgate Width: - TBD -
- Cargo Volume: 69.5
- Ext'd Cab Cargo Volume: - TBD -
- Model Group: Sierra
- Vehicle Segment: Large Pick-up
- Vehicle Type: Crew Cab
- Body Cab Style: Crew Cab
- Bed Style: regular
- Engine Displacement Units: 6.6
- Engine Camshaft: OHV
- Engine Block Type: iron
- Engine Cylinder Count: 8
- Engine Valve Count: 4
- Country of Origin: United States GMC Truck
Details
- 10-Speed A/T
- 4-Wheel Disc Brakes
- 8 Cylinder Engine
- A/C
- A/T
- ABS
- Adaptive Cruise Control
- Adjustable Steering Wheel
- Aluminum Wheels
- AM/FM Stereo
- Apple CarPlay
- Auto-Dimming Rearview Mirror
- Auxiliary Audio Input
- Back-Up Camera
- Bed Liner
- Blind Spot Monitor
- Bluetooth
- Bucket Seats
- Climate Control
- Conventional Spare Tire
- Cross-Traffic Alert
- Cruise Control
- Daytime Running Lights
- Diesel Fuel
- Driver Adjustable Lumbar
- Driver Air Bag
- Floor Mats
- Fog Lamps
- Four Wheel Drive
- Front Head Air Bag
- Front Side Air Bag
- Gasoline Fuel
- Heads-Up Display
- Heated Mirrors
- Heated Seats
- Heated Steering Wheel
- Integrated Turn Signal Mirrors
- Intermittent Wipers
- Keyless Entry
- Keyless Start
- Leather Seats
- Locking/Limited Slip Differential
- Mirror Memory
- MP3 Player
- Multi-Zone A/C
- Navigation System
- Passenger Adjustable Lumbar
- Passenger Air Bag
- Power Door Locks
- Power Driver Seat
- Power Mirror(s)
- Power Passenger Seat
- Power Steering
- Power Windows
- Premium Sound
- Privacy Glass
- Rain Sensing Wipers
- Rear Defrost
- Rear Head Air Bag
- Rear Parking Aid
- Remote Start
- Running Boards/Side Steps
- Satellite Radio
- Seat Memory
- Security System
- Sliding Rear Window
- Smart Device Integration
- Stability Control
- Steering Wheel Audio Controls
- Sunroof / Moonroof
- Telematics
- Tire Pressure Monitor
- Tires - Front All-Terrain
- Tires - Rear All-Terrain
- Tow Hitch
- Tow Hooks
- Traction Control
- Variable Speed Intermittent Wipers
- WiFi Hotspot
- Passenger Air Bag On/Off Switch
- Turbocharged
- Premium Sound System
- MP3 Capability
- Heated Front Seat(s)
- Bluetooth Connection
- Remote Engine Start
- Heated Rear Seat(s)
- Cooled Front Seat(s)
- Power Folding Mirrors
- Rear Bench Seat
- Passenger Air Bag Sensor
- Lane Departure Warning
- Driver Restriction Features
- Aerial View Display System
- Front Collision Mitigation
- Front Collision Warning
- Automatic Highbeams
- Requires Subscription
- Integrated Tailgate Step
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