Vehicle Details
Discover the 2026 GMC Sierra 1500 AT4 - a bold, capable 4WD truck ready for work and weekend adventures in Breaux Bridge, LA. Powered by a robust 6-cylinder, 3.0L diesel engine, this GMC Sierra AT4 delivers confident towing and impressive torque for hauling trailers, boats, and heavy loads while maintaining refined on-road manners. Its rugged AT4 suspension and four-wheel drive system make off-road trails, muddy fields, and slippery Louisiana backroads simple and secure. Inside, comfort meets technology with a heated steering wheel for chilly mornings, premium BOSE audio for immersive sound, and seamless smartphone integration via Android Auto. The available navigation system keeps you on course whether exploring Bayou country or heading to a job site. Safety features like lane departure warning add peace of mind on long drives. This GMC Sierra 1500 AT4 blends utility and luxury with a commanding exterior presence, durable bed features for cargo organization, and an interior designed for driver convenience and comfort. Ideal for outdoor enthusiasts, contractors, and drivers who want a rugged truck without compromising modern amenities. Located in Breaux Bridge, LA, this 2026 GMC Sierra 1500 AT4 is ready for a test drive - experience its diesel torque, advanced tech, and off-road capability firsthand. Contact us to schedule a viewing and discover why this GMC Sierra stands out among full-size pickups in South Louisiana.
Equipment
This vehicle's Lane Departure Warning helps keep you in your lane. This 2026 GMC Sierra 1500 comes equipped with Android Auto for seamless smartphone integration on the road. Apple CarPlay: Seamless smartphone integration for this vehicle - stay connected and entertained on the go! The GMC Sierra has auto-adjust speed for safe following. Engulf yourself with the crystal clear sound of a BOSE sound system in this GMC Sierra. The leather seats in the vehicle are a must for buyers looking for comfort, durability, and style. Bluetooth technology is built into this GMC Sierra, keeping your hands on the steering wheel and your focus on the road. You'll never again be lost in a crowded city or a country region with the navigation system on the vehicle. Keep your hands warm all winter with a heated steering wheel in the vehicle . See what's behind you with the back up camera on the GMC Sierra.
New 2026 GMCSierra 1500 AT4
- Diesel
- Exterior Color
- Summit White
- Interior Color
- Jet Black
- Body/Seating
- Truck Crew Cab/5 seats
- Seats
- 5 seats
- Fuel Economy
- 22/26 MPG City/Hwy
- Transmission
- 10-speed automatic
- Drivetrain
- 4x4
- Engine
- I-6 cyl
- VIN
- 1GTUUEE86TZ378132
- Stock Number
- 26GB4961
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
- All-Weather Floor Liners with AT4 Logo
- Power Sunroof
- Technology Package
- Rear Camera Mirror
- Multicolor 15" Diagonal Head-Up Display
- Bed View Camera
- GVWR: 7,200 lbs
- Federal Emissions Requirements
- 3.23 Rear Axle Ratio
- Engine: Duramax 3.0L Turbo-Diesel I6
- 220 Amp Alternator
- Transmission: 10-Speed Automatic
- AT4 Premium Package
- AT4 Preferred Package
- Universal Home Remote
- Power Sliding Rear Window with Rear Defogger
- Off-Road High Clearance Step
- Wheel Locks
- Body Color Wheel Arch Moldings
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
- 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: 275/60SR20.0
- Front wheel independent suspension
- Power steering
- Rear tires: 275/60SR20.0
- Speed-sensing steering
- Tires: all-terrain
- Wheel size: 20"
- 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: 7
- 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
- Heated front seats
- Heated rear seats
- Leather upholstery
- Max seating capacity: 5
- Power 2-way driver lumbar support
- Power 2-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
- Electric motor 1 torque: none
- Electric motor horsepower: none
- Engine liters: 3.0L
- Engine location: front
- Fuel economy city: 22mpg
- Fuel economy combined: 24mpg
- Fuel economy highway: 26mpg
- Fuel tank capacity: 24.0gal.
- Horsepower: 305hp @ 3,750RPM
- Hybrid electric powertrain type: none
- Hybrid system combined power torque: none
- Hybrid system net power: none
- 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): 282mm (11.1")
- Ramp breakover angle: 21 deg
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- 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
- Tailpipe finisher: chrome
- Trailer hitch
- Trailer sway control
- Compression ratio: 15.00 to 1
- Curb weight: 2,495kg (5,500lbs)
- 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: 1,990mm (78.3")
- Exterior length: 5,916mm (232.9")
- 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: 3,266kg (7,200lbs)
- Greenhouse Gas Score (GG): 4
- Payload: 757kg (1,670lbs)
- 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: 3,992kg (8,800lbs)
- 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
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