New 2026 GMC Sierra 2500 AT4X Crew Cab
Stock #26G1378
Vehicle Notes
Thank you for choosing Holiday Buick GMC, this Onyx Black 2026 GMC Sierra 2500HD AT4X is a great choice! Checkout the following: Transparent Pricing:…
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Chassis Details
Stock Number
26G1378
Stock Type
New
Year
2026
Make
GMC
Model
Sierra 2500
Class
3
Drivetrain
4x2
Cab Type
Crew
Vehicle Trim
AT4X
Interior Color
Obsidian Rush
Seating Capacity
5
Exterior Color Description
Onyx Black
Engine Cylinder Count
8
Engine
8 Cylinder Engine
Transmission Type
Automatic
Fuel Type
Diesel
Engine Model
L5P
Engine Size (L)
6.6
Vehicle Options
- ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
- Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
- GVWR, 11,025 lbs. (5001 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
- Differential, driver-selectable full-locking rear, e-locking
- 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 (Deleted with (ULV) AT4X AEV Edition.)
- Skid Plates, front aluminum
- Skid Plates, Transfer case, steel
- Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
- Suspension, Off-Road Includes, 1.5 suspension lift: front suspension lift composed of: Control Arms, Ball Joints, Knuckles, DSSV Dampers, rear suspension lift composed of spacer block and DSSV Dampers and Half shafts w/ revised joints, 3-stage Leaf springs from 3500
- 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.)
- Tires, LT305/70R18-126/123R, 35 M/T
- Tire, spare, LT305/70R18-126/123R, 35 M/T
- Wheel, Spare 18 (50.8 cm)
- Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
- Sunroof, power
- Bumper, front, body-color lower (Bumper color will be High Gloss Black.)
- Bumper, rear body-color with bumper CornerSteps (Bumper color will be High Gloss Black.)
- Bedliner, Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Available with Ship Thru code (SQE), (TCE) or (TCH), not available with any other Ship Thru code.)
- Bed Step, Black integrated on forward portion of bed on driver and passenger side
- CornerStep, rear bumper (Not available with (ULV) AT4X AEV Edition.)
- 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 Dark Nickel inserts.)
- 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
- Lamps, Smoked Amber roof marker, (LED) (Not available with (YF5) California state emissions requirements.)
- 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 (With (ULV) AT4X AEV Edition door handles will be Gloss black.)
- 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
- 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)
- 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, leather-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
- Multicolor 15 Diagonal Head-Up 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
- Universal Home Remote
- Wireless Charging
- Theft-deterrent system, unauthorized entry
- 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
- 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
- Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)
- 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
- Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
- View All
Body Details
Body Type
Pickup
Disclaimer:
Holiday Discount* applies to everyone.
New vehicle pricing includes all offers and incentives. Tax, Title and Tags not included in vehicle prices shown and must be paid by the purchaser. While great effort is made to ensure the accuracy of the information on this site, errors do occur so please verify information with a customer service rep. This is easily done by calling us at (920) 238-3031 or by visiting us at the dealership.
**With approved credit. Terms may vary. Monthly payments are only estimates derived from the vehicle price with a 72 month term, 4.9% interest and 20% downpayment.
The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
New vehicle pricing includes all offers and incentives. Tax, Title and Tags not included in vehicle prices shown and must be paid by the purchaser. While great effort is made to ensure the accuracy of the information on this site, errors do occur so please verify information with a customer service rep. This is easily done by calling us at (920) 238-3031 or by visiting us at the dealership.
**With approved credit. Terms may vary. Monthly payments are only estimates derived from the vehicle price with a 72 month term, 4.9% interest and 20% downpayment.
The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
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