New 2026 GMC Sierra 1500 AT4 Crew Cab

location_on Early, TX

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New 2026 GMC Sierra 1500 AT4 Crew Cab - photo 1

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New 2026 GMC Sierra 1500 AT4 Crew Cab - photo 5

New 2026 GMC Sierra 1500 AT4 Crew Cab - photo 6

New 2026 GMC Sierra 1500 AT4 Crew Cab - photo 7

New 2026 GMC Sierra 1500 AT4 Crew Cab - photo 8

New 2026 GMC Sierra 1500 AT4 Crew Cab - photo 9

New 2026 GMC Sierra 1500 AT4 Crew Cab - photo 10

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Key Features

Body Type Pickup

Fuel Type

Engine Description

Drivetrain 4WD

Cab Type Crew Cab

Trim AT4

Vehicle Details

checklist

Overview

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Stock Number

G264350

Stock Type

New

Year

2026

Make

GMC

Model

Sierra 1500

Model Code

TK10543

Cab Type

Crew

Vehicle Trim

AT4

Body Type

Pickup

VIN

3GTUUEEL2TG258669

Brake Type

Hydraulic

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Dimensions

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Dimensions

Class

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Drivetrain

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Drivetrain

4WD

Transmission

Transmission Type

Automatic

manufacturing

Engine

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Engine Description

6.2L EcoTec3 V8 engine

Engine Cylinder Count

Engine Model

L87

Engine Size (L)

6.2

Horsepower

420

Fuel Type

Gasoline

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Seating

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Seat Dimensions

Seating Capacity

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Colors

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Interior Color

Jet Black with Kalahari accents, Perforated leather front seat trim

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Vehicle Options

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Floor covering, color-keyed carpeting
GMC Premium information Display- 13.4" diagonal Multicolor touch screen
GMC Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UHX) Lane Keep Assist with Lane Departure Warning, and (UHY) Automatic Emergency Braking (Includes (T8Z) Buckle to Drive and (HS1) Safety Alert Seat.)
SiriusXM Trial Subscription
Air vents, rear
Glass, deep-tinted
Wireless, Apple CarPlay / Wireless Android Auto
Steering wheel, heated
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
Steering column, power rake and telescoping
Door handles, body-color
Adaptive Cruise Control
Automatic Stop/Start
Wipers, front rain-sensing
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.)
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) interior power outlet)
Steering column lock, electrical
Automatic Emergency Braking (Included and only available with (PDI) GMC Pro Safety.)
Grille (Black chrome grille insert bars with gloss black header and accents.)
Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
Cargo tie downs (12), fixed
Following Distance Indicator (Included and only available with (PDI) GMC Pro Safety.)
Headlamps, LED projectors with Fade-on/Fade-off animation, LED turn signals and Daytime Running Lamps
Pickup bed
Remote vehicle starter system
Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
Seat Belt Adjustable Guide Loops, front row only
Wheels, 20" x 9" (50.8 cm x 22.9 cm) machined aluminum with Carbon Grey Metallic accents (STD)
LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
Seats, ventilated driver and front passenger
Front Pedestrian Braking (Included and only available with (PDI) GMC Pro Safety.)
Lighting, perimeter
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Steering wheel audio controls
Driver memory recalls driver "presets" for power driver seat and outside mirrors
HD Surround Vision provides the driver with an overhead view of the scene around the vehicle on a center stack display. Includes front camera washer.
Window, power front, passenger express up/down
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Wheelhouse liners, rear (Deleted with (PCP) AT4 CarbonPro Edition.)
Battery, heavy-duty 850 cold-cranking amps/95 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (LZ0) Duramax 3.0L Turbo-Diesel I6 engine.)
IntelliBeam, automatic high beam on/off (Included and only available with (PDI) GMC Pro Safety.)
Seat trim, Perforated leather front
Air filter, heavy-duty
Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory
Taillamps, LED LED signature taillight with LED stop, turn & reverse and Fade-on/Fade-off animation
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
Hill Descent Control
Skid Plates
Transfer case, two-speed, electronic Autotrac with push button control (4WD models only)
Power outlet, interior power outlet, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
Theft-deterrent system, unauthorized entry
Lane Keep Assist with Lane Departure Warning (Included and only available with (PDI) GMC Pro Safety.)
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)
Rear Seat Reminder
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.)
Daytime Running Lamps, LED signature lighting
Brake lining wear indicator
Trailer Side Blind Zone Alert
USB Ports, 2, Charge/Data ports located inside center console
Mirror caps, high gloss Black
Keyless Open and Start includes remote keyless entry
Rear Pedestrian Alert
Hitch View with image adjustment, Pan/Zoom/Tilt
Door locks, power
Seat adjuster, driver 10-way power including lumbar
Premium Floor Liners with removable carpet insert, front
Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)
Bumper, front, body-color lower
Forward Collision Alert (Included and only available with (PDI) GMC Pro Safety.)
Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
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
Seats, front bucket with center console (STD)
USB ports, (2) charge-only, rear
Electronic Precision Shift and steering column paddle shifters
Rear axle, 3.23 ratio
Push Button Start
Auto-locking rear differential
Steering, Electric Power Steering (EPS) assist, rack-and-pinion
Windows, power front, drivers express up/down
Air conditioning, dual-zone automatic climate control
Recovery hooks, Red
Wireless Charging
Bose Sound System, premium 7-speaker system with Richbass woofer
Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, 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)
Compass, located in instrument cluster
Seat adjuster, passenger 10-way power including lumbar
Premium Floor Liners with removable carpet insert, rear
USB Ports, 2 (first row) located on console
Tailgate, GMC MultiPro Tailgate with six functional load/access features
Exhaust, aluminized stainless-steel muffler and tailpipe
Capless Fuel Fill
Frame, fully-boxed, hydroformed front section
OnStar services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
Bluetooth for phone, connectivity to vehicle infotainment system
Windows, power rear, express down
Tire, spare 255/80R17SL all-season, blackwall (Included and only available with 20" or 22" wheels and tires excluding (QFV) LT265/60R20 MT blackwall Goodyear Wrangler Territory tires.) (STD)
Trailer Camera Provisions and trailer viewing software
Steering wheel, wrapped
Front and Rear Park Assist, ultrasonic
Tailgate and bed rail protection caps, top
Defogger, rear-window electric
Rear Cross Traffic Braking
Safety Alert Seat (Included and only available with (PDI) GMC Pro Safety.)
CornerStep, rear bumper
Exterior Temperature Display, located in radio display
Bedliner, Spray-on Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (Deleted with (PCP) AT4 CarbonPro Edition. Crew Cab models are available with Ship Thru codes (VCO), (VDT), (VYC) or (VYS).)
Suspension, Off-Road with 2" factory installed lift and monotube shocks
Rear Seat Belt Indicator
Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
Fog lamps, LED
OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including 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 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.)
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) GMC Pro Safety.)
Four wheel drive
Hitch Guidance
Tires, 275/60R20SL all-terrain, blackwall (STD)
Seats, heated second row outboard seats
Bumper, rear body-color with corner steps
Seating, heated driver and front outboard passenger
Trailer brake controller, integrated
GVWR, 7100 lbs. (3221 kg)
Multicolor 15" Diagonal Head-Up Display
Battery, heavy-duty 730 cold-cranking amps/80 Amp-hr, maintenance-free
Cooling, external engine oil cooler
Universal Home Remote
AT4 Preferred Package
LPO, Black GMC emblems
Rear Camera Mirror, inside rearview auto-dimming
AT4 Preferred Equipment Group
Window, power, rear sliding with rear defogger
LPO, Black Sierra nameplates
Coastal Dune
Engine, 6.2L EcoTec3 V8
LPO, Sport Step, Black
LPO, Black Badging Package
Sunroof, power
LPO, Rear underseat storage, composite storage bin
Jet Black with Kalahari accents, Perforated leather front seat trim
License plate kit, front
Emissions, Federal requirements
Active Exhaust, Dual, sport-mode enabled
Bed View Camera
Cooling, auxiliary external transmission oil cooler
LPO, All-weather floor liners, 1st and 2nd rows
Transmission, 10-speed automatic with Electronic Precision shift, electronically controlled
Technology Package
Alternator, 170 amps

Bruner Early GMC ci2 Test Site

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location_on Early, TX

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Listing Notes

2026 GMC Sierra 1500 AT4 Off-Road Luxury in Brownwood, TXDominate the terrain of Brown County with this 2026 GMC Sierra 1500 AT4, available now at Bruner Auto Group in Early/Brownwood, TX. Finished in the rugged and earthy Coastal Dune with a premium Jet Black leather interior featuring Kalahari accents, this truck is the ultimate expression of off-road capability and high-end refinement. Whether youre exploring the backroads near Lake Brownwood or hauling gear down Highway 377, the AT4 is engineered to lead.Unmatched Off-Road PerformanceThe AT4 isn't just a trim; its a mission statement. Powered by the high-output EcoTec3 6.2L V8 engine and a 10-speed automatic transmission, this truck delivers the raw power needed for the toughest Texas trails.2-Inch Factory Lift: Standard equipment for superior ground clearance right off the lot.4WD with 2-Speed Transfer Case: Includes specialized terrain modes for mud, sand, and rock crawling.Off-Road Suspension with Rancho Monotube Shocks: Specifically tuned to soak up the bumps of a Central Texas ranch road.Auto-Locking Rear Differential: Ensures maximum power is delivered to the wheels that have the most grip.Red Recovery Hooks: A signature AT4 look thats as functional as it is bold.Premium Interior & Advanced TechInside, the AT4 offers a no-compromise cabin that serves as a luxury retreat after a long day at the job site.Jet Black Leather with Kalahari Accents: A unique, durable, and sophisticated interior palette.13.4 Diagonal GMC Infotainment System: Featuring Google Built-In for seamless navigation and voice commands.15 Diagonal Multi-Color Head-Up Display: Projects speed, safety alerts, and navigation onto the windshield.Bose 7-Speaker Premium Sound System: Provides an immersive audio experience for every mile of your journey.Heated & Ventilated Front Seats: Essential for staying comfortable through the extremes of the Texas climate.Wireless Charging & Smartphone Integration: Featuring wireless Apple CarPlay and Android Auto.Versatility & Utility FeaturesBuilt for work and play, this Sierra 1500 is packed with features to make every task easier:GMC MultiPro Tailgate: Six unique functions to improve loading, unloading, and access to the cargo bed.CarbonPro Edition: Features the industry-first carbon fiber composite bed for unmatched durability and scratch resistance.Spray-on Bedliner with AT4 Logo: Factory protection for your most valuable cargo.LED Cargo Area Lighting: Keeps your workspace illuminated long after the sun goes down.HD Surround Vision with Bed View: Perfect for hitching a trailer or navigating tight parking spots in downtown Brownwood.Safety & Peace of MindStay protected with the GMC Pro Safety suite, including:Automatic Emergency Braking & Forward Collision Alert.Lane Keep Assist with Lane Departure Warning.Rear Cross Traffic Braking & Rear Pedestrian Detection.Adaptive Cruise Control: Reduces fatigue on those long hauls to Abilene or Fort Worth.Why Choose Bruner Auto Group?Since 1928, the Bruner family has been a trusted partner for drivers in Brownwood, Early, and Comanche. We understand the needs of Texas truck ownersproviding honest deals, expert service, and a vehicle that will stand the test of time. This 2026 GMC Sierra 1500 AT4 has been fully inspected and is ready for its first adventure.Visit us at 224 Early Blvd, Early, TX 76802, or call us to schedule your private test drive today!