Vehicle Details
Discover the rugged luxury of this 2026 GMC Sierra 1500 AT4X 4WD, now available in Breaux Bridge, LA. Built for drivers who demand power and refinement, this GMC Sierra features a torquey 6-cylinder 3.0L Diesel engine that delivers fuel-efficient highway miles and impressive towing capability. Premium off-road capability paired with a refined interior makes this AT4X a standout for work, weekend adventures, and everyday comfort. Inside, enjoy high-end amenities including a BOSE stereo system for rich audio, steering wheel audio controls for hands-on convenience, and remote start for instant climate comfort. Safety and driver assistance come standard with Adaptive Cruise Control and Lane Departure Warning, helping you stay confident on long trips and busy commutes. The 4WD system and rugged AT4X suspension are engineered to handle rough trails and slick Louisiana roads with ease. Located in Breaux Bridge, LA, this GMC Sierra 1500 AT4X is priced to sell and offers the best price in the area â" exceptional value for a premium truck built to perform. Whether hauling equipment, towing a trailer, or exploring backcountry routes, this GMC delivers capability, comfort, and advanced technology. Schedule a test drive today and experience why this GMC Sierra 1500 AT4X is the smart choice for drivers seeking power, luxury, and proven off-road performance near Breaux Bridge.
Equipment
The leather seats in this 2026 GMC Sierra 1500 are a must for buyers looking for comfort, durability, and style. See what's behind you with the back up camera on the GMC Sierra. The GMC Sierra has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. It stays safely in its lane with Lane Keep Assist. An off-road package is equipped on this GMC Sierra. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this 2026 GMC Sierra 1500. Anywhere on the planet, you will have hundreds of digital stations to choose from. This vehicle features a high end BOSE stereo system. This 2026 GMC Sierra 1500 comes equipped with Android Auto for seamless smartphone integration on the road. The vehicle features steering wheel audio controls. This unit's Lane Departure Warning keeps you safe by alerting you when you drift from your lane.
Packages
Preferred Equipment Group 4SG: Trailer Side Blind Zone Alert; Power Sliding Rear Window with Rear Defogger; Ultrasonic Front and Rear Park Assist; Trailer Camera Provisions; Electric Rear-Window Defogger; Theft Deterrent System (unauthorized Entry); Gloss Black Header with Dark Nickel Grille Insert Bars; Front Rain-Sensing Wipers; Heavy-Duty Air Filter; Skid Plates; 120-Volt Interior Power Outlet; Heated Driver and Front Outboard Passenger Seating; Wireless Charging; Front Premium Floor Liners with Removable Carpet Insert; Color-Keyed Carpeting Floor Covering; OnStar Services Capable; Driver-Selectable Full-Locking Front Differential; Heated 2nd Row Outboard Seats; Off-Road Suspension; Power Front Passenger Windows with Express Up/down; Driver-Selectable Full-Locking Rear Differential; Power Rear Windows with Express Down; Integrated Trailer Brake Controller; HD Surround Vision; Ventilated Driver and Front Passenger Seats; Power Rake and Telescoping Steering Column; Power Sunroof; Multicolor 15 Diagonal Head-Up Display; Keyless Open and Start; Bose Premium Series with 12- Speaker System; Perimeter Lighting; Push Button Start; LED Cargo Area Lighting; Remote Vehicle Starter System; In-Vehicle Trailering System App; Hill Descent Control; Floor-Mounted Center Console; MultiPro Tailgate Audio System by Kicker; Bed View Camera; Rear Cross Traffic Braking; Trailer Tire Pressure Monitor System; GMC Pro Safety; Trailering Package; 2 USB Ports; 2 Charge/data USB Ports Inside Center Console; Steering Wheel Audio Controls; 2 type-C Charge-Only Rear USB Ports; Universal Home Remote; 2-Speed Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bedliner with GMC Logo; SiriusXM with 360L Trial Subscription; Hitch View; Power Front Windows with Driver Express Up/down; Rear Pedestrian Detection; Wi-Fi Hotspot Capable; Rear Wheelhouse Liners; Power Door Locks. Off-Road High Clearance Step. Rear Underseat Storage. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**
New 2026 GMCSierra 1500 AT4X
- Diesel
- Exterior Color
- Summit White
- Interior Color
- Obsidian Rush
- Body/Seating
- Truck Crew Cab/5 seats
- Seats
- 5 seats
- Fuel Economy
- 19/20 MPG City/Hwy
- Transmission
- 10-speed automatic
- Drivetrain
- 4x4
- Engine
- I-6 cyl
- VIN
- 3GTUUFE81TG291423
- Stock Number
- 26GB4830
Highlighted Features
- Navigation system
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Power moonroof
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
Included Packages & Accessories
- Preferred Equipment Group 4SG
- GMC Pro Safety
- Forward Collision Alert
- Following Distance Indicator
- Front Pedestrian Braking
- IntelliBeam Automatic High Beam on/Off
- Lane Keep Assist with Lane Departure Warning
- Automatic Emergency Braking
- Buckle to Drive
- Safety Alert Seat
- Rear Cross Traffic Braking
- Rear Pedestrian Detection
- Bose Premium Series with 12- Speaker System
- SiriusXM with 360L Trial Subscription
- Floor-Mounted Center Console
- Multicolor 15" Diagonal Head-Up Display
- Electric Rear-Window Defogger
- Power Door Locks
- Push Button Start
- Remote Vehicle Starter System
- Keyless Open and Start
- Color-Keyed Carpeting Floor Covering
- Front Premium Floor Liners with Removable Carpet Insert
- Rear Premium Floor Liners with Removable Carpet Insert
- OnStar Services Capable
- Wi-Fi Hotspot Capable
- 120-Volt Interior Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 Type-C Charge-Only Rear USB Ports
- 2 USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- HD Surround Vision
- Trailer Side Blind Zone Alert
- Trailer Camera Provisions
- Bed View Camera
- Heated Driver and Front Outboard Passenger Seating
- Ventilated Driver and Front Passenger Seats
- Heated 2nd Row Outboard Seats
- Steering Wheel Audio Controls
- Power Rake and Telescoping Steering Column
- Power Sunroof
- Theft Deterrent System
- Universal Home Remote
- Power Sliding Rear Window with Rear Defogger
- Power Front Windows with Driver Express Up/Down
- Power Front Passenger Windows with Express Up/Down
- Power Rear Windows with Express Down
- Wireless Charging
- Spray-on Pickup Bedliner with GMC Logo
- Deep-Tinted Glass
- Gloss Black Header with Dark Nickel Grille Insert Bars
- LED Cargo Area Lighting
- Perimeter Lighting
- MultiPro Tailgate Audio System by Kicker
- Ultrasonic Front and Rear Park Assist
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- Trailering Package
- Hitch Guidance
- Hitch View
- in-Vehicle Trailering System App
- Trailer Tire Pressure Monitor System
- Heavy-Duty Air Filter
- Driver-Selectable Full-Locking Front Differential
- Driver-Selectable Full-Locking Rear Differential
- Hill Descent Control
- Skid Plates
- Off-Road Suspension
- Integrated Trailer Brake Controller
- 2-Speed Transfer Case
- Off-Road High Clearance Step
- Rear Underseat Storage
Detailed Specifications
- 1-touch down
- 1-touch up
- Adaptive Cruise Control
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Emergency communication system: OnStar
- Front beverage holders
- Front dual zone A/C
- Garage door transmitter
- Heated steering wheel
- Illuminated entry
- Memory seat
- Moonroof sunshade: manual
- Navigation system
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power moonroof
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start
- Remote keyless entry
- Speed control
- Surround View Monitor: HD Surround Vision w/Hitch View yes
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 275/70SR18.0
- Front wheel independent suspension
- Power steering
- Rear tires: 275/70SR18.0
- Speed-sensing steering
- Wheel size: 18"
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM with 360L
- Primary LCD size: 13.4"
- Radio data system
- Satellite radio trial duration with new vehicle purchase (months): 3
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose
- Speakers: 12
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless Phone Charger: front
- Wireless phone connectivity: Bluetooth
- Basic warranty: 36 months/36,000miles
- Corrosion perforation warranty: 72 months/100,000miles
- Diesel engine warranty: 60 months/100,000miles
- Maintenance warranty: 12 months/ unlimited distance
- Powertrain warranty: 60 months/60,000miles
- Roadside assistance coverage: 60 months/60,000miles
- Front center armrest
- Front seats: bucket
- Genuine wood dashboard insert
- Genuine wood door panel insert
- Heated front seats
- Heated rear seats
- Leather steering wheel
- Leather upholstery
- Max seating capacity: 5
- Power 4-way driver lumbar support
- Power 4-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: I-6
- Drive type: four-wheel
- Engine liters: 3.0L
- Engine location: front
- Front locking differential
- Fuel economy city: 19mpg
- Fuel economy combined: 19mpg
- Fuel economy highway: 20mpg
- Fuel tank capacity: 24.0gal.
- Horsepower: 305hp @ 3,750RPM
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 24
- Rear locking differential
- Recommended fuel: Diesel
- Standard fuel economy fuel type: diesel
- Torque: 495 lb.-ft. @ 2,750RPM
- Transmission: 10 speed automatic
- Variable intake manifold
- Variable valve control
- Approach angle: 26 deg
- Departure angle: 23 deg
- Ground clearance (min): 292mm (11.5")
- Ramp breakover angle: 23 deg
- Auto-dimming door mirrors
- Bedliner
- Heated door mirrors
- Hitch Class: IV
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch
- Trailer sway control
- Compression ratio: 15.00 to 1
- Curb weight: 2,672kg (5,890lbs)
- Engine bore x stroke: 84.0mm x 90.0mm (3.31" x 3.54")
- Engine displacement: 3.0 L
- Engine torque: 495 lb.-ft. @ 2,750RPM
- Exterior body width: 2,063mm (81.2")
- Exterior height: 1,998mm (78.7")
- Exterior length: 5,944mm (234.0")
- Front headroom: 1,013mm (39.9")
- Front hiproom: 1,544mm (60.8")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,638mm (64.5")
- GVWR: 3,311kg (7,300lbs)
- Greenhouse Gas Score (GG): 3
- Payload: 626kg (1,380lbs)
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,505mm (59.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,626mm (64.0")
- Towing capacity: 3,856kg (8,500lbs)
- Turning radius: 7.2m (23.7')
- Wheelbase: 3,747mm (147.5")
- Appearance: digital/analog
- Auto high-beam headlights
- Blind spot: Trailer Side Blind Zone Alert warning
- Compass
- Configurable
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
- Exterior parking camera right
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Heads up display
- Lane departure: Lane Keep Assist with Lane Departure Warning active
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: Front and Rear Park Assist front and rear
- Rain sensing wipers
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: Forward Collision Alert with Automatic Braking mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross Traffic Braking mitigation
- Security system
- Tracker system: Stolen Vehicle Assistance
- Traction control
Dealer Notes
KBB.com Consumer Reviews
- 4.0
Depreciation of 50%
By Manny A on 10/28/2026 10:06:36 AM
This is a amazing truck.. Comfortable lots of sensors Etc…. My truck has 30000 miles I when to trade in they offer $46000 I paid $86000 the depreciation is incredible I don’t buy new truck never again. - 5.0
2021 GMC SLT 4WD SIERRA, Great Truck
By Ransom1 on 10/15/2026 4:18:42 PM
This is my 8th truck. This is hands down the very best truck I’ve ever owned. Not only is it the best looking truck on the road I have never had it in the shop except for oil changes and scheduled maintenance. The silver does not show dirt or grime. - 5.0
Great 4 cylinder truck
By Steve on 9/23/2026 2:01:15 AM
I have only pulled a trailer one time and still got 18 mpg down doing 80 down the interstate. Otherwise this vehicle is used for commuting or recreating. I typically get 22-24 mpg driving MT highways to the mountains. The turbo has some spunk for getting up to speed and the five years I've had my truck no complaints.