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New 2026 GMC Sierra 2500 SLT Crew Cab

Stock #21779

Window Sticker

Chassis Details

Stock Number

21779

Stock Type

New

Year

2026

Make

GMC

Model

Sierra 2500

Class

GVWR

10,850

Drivetrain

4WD

Cab Type

Crew

Vehicle Trim

SLT

Vehicle VIN

1GT4UNE71TF210665

Interior Color

Dark Walnut/Slate, Perforated Leather-appointed front outboard seating positions

Seating Capacity

Exterior Color Description

Onyx Black

Engine Cylinder Count

Engine

6.6L V8 Gas engine

Transmission Type

Automatic

Fuel Type

Gasoline

Engine Model

L8T

Engine Size (L)

6.6

Horsepower

401

Brake Type

Hydraulic

Vehicle Options

Bed Step, Black integrated on forward portion of bed on driver and passenger side
SiriusXM Trial Subscription
Wireless phone projection for Apple CarPlay and Android Auto
Air vents, rear
Bumper, front chrome lower
Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
Glass, deep-tinted
Steering wheel, heated
Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
Wipers, front rain-sensing
Floor covering, color-keyed carpeting
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.)
USB Ports, 2, Charge/Data ports located on instrument panel
Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
Tire, spare LT275/70R18 all-terrain, blackwall
Tailgate, standard
Remote vehicle starter system
Tires, LT275/70R18E all-terrain, blackwall (STD)
Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
Floor mats, carpeted rear (Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
Seat Belt Adjustable Guide Loops, front row only
LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
Transmission, 10-Speed automatic (STD)
Rear Seat Reminder
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
USB ports, (2) charge-only, rear
LED Signature DRL's
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Driver memory recalls driver "presets" for power driver seat and outside mirrors
Bumper, rear chrome with bumper CornerSteps
Lamps, cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
Grille (Chrome surround with Chrome insert bars.)
Seat trim, Perforated Leather-appointed front outboard seating positions
Window, power front, passenger express up/down
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
Air filter, heavy-duty
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
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
Cooling, external engine oil cooler
Theft-deterrent system, unauthorized entry
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)
Cruise control, steering wheel-mounted
SiriusXM with 360L Trial Subscription. SiriusXM with 360L transforms your customers' ride with our most extensive and personalized radio experience on the road. (IMPORTANT: The SiriusXM trial subscription is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. Trial subscription is subject to the SiriusXM Customer Agreement and privacy policy, visit siriusxm.com which includes full terms and how to cancel. All fees, content, features, and availability are subject to change. Some features require GM connected vehicle services.)
OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including select remote commands, built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (Requires (UE1) OnStar. OnStar Basics includes select remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.)
Daytime Running Lamps, LED signature lighting
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.)
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
Brake lining wear indicator
Keyless Open and Start includes remote keyless entry
GVWR, 10,850 lbs. (4921 kg) (STD) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18", 20" or 22" wheels.)
Headlamps, Animated LED projectors LED turn signals and Daytime Running Lamps
Door locks, power
Seat adjuster, driver 10-way power including lumbar
Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)
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.)
Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
Push Button Start
Auto-locking rear differential
Steering wheel audio controls
Windows, power front, drivers express up/down
Air conditioning, dual-zone automatic climate control
Bluetooth for phone connectivity to vehicle infotainment system
Cargo tie downs (12), fixed, rated at 500 lbs per corner
Compass, located in instrument cluster
GMC Premium information Display- 13.4" diagonal Multicolor touch screen
Moldings, beltline, chrome
Seat adjuster, passenger 10-way power including lumbar
Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
Mirror caps, chrome
Suspension Package (Not available with (X31) Off-Road Package.)
Mirror, inside rearview auto-dimming
Wheelhouse liners, rear
Cooling, auxiliary external transmission oil cooler
Air filtration monitoring
HD Rear Vision Camera (Removed with (UV2) HD Surround Vision.)
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
Transfer case, two-speed active, electronic Autotrac with push button control (Requires 4WD models.)
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)
Windows, power rear, express down
Pickup bed includes bed assist step
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
Steering wheel, wrapped
Tailgate and bed rail protection caps, top
Steering column, manual Tilt-Wheel and telescoping
Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
Steering, Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
Defogger, rear-window electric
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.)
CornerStep, rear bumper
Exterior Temperature Display, located in radio display
Engine, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline, (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm) (STD)
OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
Floor mats, carpeted front (Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
Rear Seat Belt Indicator
Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
Fog lamps, LED
Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
Four wheel drive
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
Door handles, chrome
Wheels, 18" (45.7 cm) machined aluminum wheel with Dark Grey metallic accents (STD)
Seating, heated driver and front outboard passenger
Trailer brake controller, integrated
Sierra HD Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UFL) Lane Departure Warning, (T8Z) Buckle to Drive and (UHY) Automatic Emergency Braking
SLT Preferred Equipment Group
Bose Sound System, premium 7-speaker system with Richbass woofer
Center Console, floor-mounted
LPO, All-weather floor liner, 1st and 2nd rows
Seats, front bucket
SLT Convenience Package
LPO, GMC Protection Package
Dark Walnut/Slate, Perforated Leather-appointed front outboard seating positions
Seats, ventilated driver and front passenger
Emissions, Federal requirements
Lamps, Smoked Amber roof marker, (LED)
Wireless Charging
Onyx Black
LPO, Front and rear molded splash guards, Black
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