This striking 2026 GMC Sierra 2500HD AT4 in Volcanic Red Tintcoat delivers serious capability with a Duramax 6.6L V8 Turbodiesel engine paired to a 10-speed automatic transmission and 4WD. Built for work and adventure, the AT4 trim combines rugged construction with premium comfort and technology that makes every journey purposeful.
Key Features:
- Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic
- AT4 Premium Plus Package with snow plow and gooseneck/5th wheel prep
- Bose Premium 7-Speaker Sound System with SiriusXM 360L
- Premium GMC Infotainment System with Apple CarPlay and Android Auto
- Heated and ventilated front seats with 10-way power driver seat adjuster
- Multicolor 15" Head-Up Display and HD Surround Vision
- Wireless charging and phone projection
- All-weather floor liners, front and rear
- Ultrasonic front and rear park assist with trailer camera provisions
This truck is equipped to handle demanding work while keeping you connected and comfortable. Advanced safety features include automatic emergency braking, forward pedestrian braking, and rear cross-traffic alert. The adjustable suspension, hill descent control, and off-road high-clearance step ensure capable performance across varied terrain. Whether you're towing, hauling, or commanding the road, this Sierra delivers the reliability GMC is known for.
Visit our showroom to experience this exceptional truck firsthand and discover why discerning buyers choose the Sierra 2500HD AT4.
Advertised price excludes mandatory government fees (tax, title, license, and registration). All lease or finance rates/terms are subject to buyer qualifications and lender requirements; special incentivized rates/offers may not be combinable with other purchase incentives. Price excludes any optional products, services, or accessories customer chooses to purchase. At Zeigler, we believe our customers deserve an easy transparent buying experience. That means the price you see is the price you can expect, with no hidden fees or charges at the time of purchase. Although every reasonable effort has been made to ensure the accuracy of the information presented on this site, inadvertent errors, omissions, and other inaccuracies may occur. We strive to update our inventory as quickly as possible, but there can be a lag time between the sale of a vehicle and the update of inventory on our website. For the best customer experience, please verify all vehicle information and pricing with the de
New 2026 GMCSierra 2500HD AT4
- Diesel
- Exterior Color
- Volcanic Red
- Interior Color
- Jet Black With Kalahari Accents
- Body/Seating
- Truck/5 seats
- Seats
- 5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- Duramax 6.6L V8 Turbodiesel
- VIN
- 1GT4UPEY3TF385603
- Stock Number
- TF385603
Highlighted Features
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
- Front dual zone A/C
Included Packages & Accessories
- AT4 Preferred Package
- AT4 Premium Plus Package
- Gooseneck/5th Wheel Prep Package
- Preferred Equipment Group 4SB
- Snow Plow Prep/Camper Package
- Technology Package
- X31 Off-Road Package
- 7 Speakers
- AM/FM radio: SiriusXM with 360L
- Bose Premium 7-Speaker Sound System
- Premium audio system: Premium GMC Infotainment System
- Radio: AM/FM Stereo with Premium GMC Infotainment System
- SiriusXM with 360L Trial Subscription
- Steering Wheel Audio Controls
- Air Conditioning
- Automatic temperature control
- Electric Rear-Window Defogger
- Front dual zone A/C
- Rear window defroster
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Memory seat
- Power driver seat
- Power steering
- Power windows
- Push Button Start
- Remote keyless entry
- Remote Vehicle Starter System
- Steering wheel mounted audio controls
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Off-Road Suspension
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Emergency communication system: OnStar
- Front anti-roll bar
- Front wheel independent suspension
- Keyless Open and Start
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power Sunroof
- Pickup Box
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Hill Descent Control
- Auto High-beam Headlights
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Unauthorized Entry Theft-Deterrent System
- Speed control
- 2-Speed Active Transfer Case
- 220-Amp Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- Auto-dimming door mirrors
- Bed Mounted Assist Handle
- Bumpers: body-color
- Gloss Black Header Grille and Grille Insert Bars
- Heated door mirrors
- IntelliBeam Automatic High Beam on/Off
- LED Cargo Area Lighting
- LED Smoked Amber Roof Marker Lamps
- Off-Road High Clearance Step
- Power door mirrors
- Rear step bumper
- Rear Wheelhouse Liners
- Spray-on Pickup Bedliner with GMC Logo
- Turn signal indicator mirrors
- Winter Grille Cover
- 1st and 2nd Rows All-Weather Floor Liners
- 2 Charge-Only Rear USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- 2 USB Ports
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Automatic Emergency Braking
- Bed View Camera with Two Trailer Camera Provisions
- Buckle to Drive
- Compass
- Driver door bin
- Driver vanity mirror
- Floor-Mounted Center Console
- Following Distance Indicator
- Forward Collision Alert
- Front Pedestrian Braking
- Front Premium Floor Liners with Removable Carpet Insert
- Front reading lights
- HD Surround Vision
- Heated steering wheel
- Illuminated entry
- Inside Rearview Auo-Dimming Rear Camera Mirror
- Multicolor 15" Diagonal Head-Up Display
- OnStar Services Capable
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear Cross Traffic Alert
- Rear Premium Floor Liners with Removable Carpet Insert
- Rear reading lights
- Rear seat center armrest
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trailer Cam Provisions and Trailer Viewing Software
- Trailer Side Blind Zone Alert
- Trip computer
- Ultrasonic Front and Rear Park Assist
- Voltmeter
- Wireless Charging
- Wireless Phone Projection
- 10-Way Power Driver Seat Adjuster with Lumbar
- 10-Way Power Passenger Seat Adjuster with Lumbar
- Front Bucket Seats
- Front Center Armrest
- Heated 2nd Row Outboard Seats
- Heated Driver and Front Outboard Passenger Seats
- Heated front seats
- Heated rear seats
- Perforated Leather-Appointed Front Seat Trim
- Power passenger seat
- Safety Alert Seat
- Split folding rear seat
- Ventilated Driver and Front Passenger Seats
- Ventilated front seats
- Passenger door bin
- Hitch Guidance with Hitch View
- in-Vehicle Trailering System App
- Alloy wheels
- Wheels: 20" High Gloss Black 8 Spokes Aluminum
- Deep-Tinted Glass
- Front Rain-Sensing Wipers
- Power Front Passenger Windows with Express Up/Down
- Power Sliding Rear Window with Defogger
- Rain sensing wipers
- Variably intermittent wipers
- 3.42 Axle Ratio
- 3.73 Rear Axle Ratio
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
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- 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 wheel independent suspension
- Power steering
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- 1st row LCD monitors: 2
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 13.4"
- 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
- Maintenance warranty: 12 months/7,500miles
- 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
- Cylinder configuration: V-8
- Drive type: four-wheel
- Electric motor 1 torque: none
- Electric motor horsepower: none
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- 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
- Rear locking differential
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- 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
- Trailer hitch
- Trailer sway control
- Turn signal indicator mirrors
- Engine displacement: 6.6 L
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,027mm (79.8")
- Exterior length: 6,369mm (250.8")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Turning radius: 8.0m (26.3')
- Wheelbase: 4,039mm (159.0")
- 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
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: UltraSonic 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 Alert warning
- Security system
- Traction control
Dealer Notes
KBB.com Consumer Reviews
Advertised price excludes mandatory government fees (tax, title, license, and registration). All lease or finance rates/terms are subject to buyer qualifications and lender requirements; special incentivized rates/offers may not be combinable with other purchase incentives. Price excludes any optional products, services, or accessories customer chooses to purchase. At Zeigler, we believe our customers deserve an easy transparent buying experience. That means the price you see is the price you can expect, with no hidden fees or charges at the time of purchase. Although every reasonable effort has been made to ensure the accuracy of the information presented on this site, inadvertent errors, omissions, and other inaccuracies may occur. We strive to update our inventory as quickly as possible, but there can be a lag time between the sale of a vehicle and the update of inventory on our website. For the best customer experience, please verify all vehicle information and pricing with the dealership directly.
All vehicle specifications, prices and equipment are subject to change without notice. See above for information on purchase financing and lease program expiration dates. Prices and payments (including the amount down payment) do not include tax, titles, tags, documentation charges, emissions testing charges, or other fees required by law or lending organizations. The estimated payments may not include upfront finance charges that must be paid to be eligible for the purchase financing program used to estimate the APR and payments. Listed Annual Percentage Rates are provided for the selected purchase financing or lease programs available on the current date. Program expiration dates reflect currently announced program end dates, but these programs are subject to change at any time.
Lessees will be financially responsible for mileage beyond the elected quantity and for vehicle maintenance and repairs and excessive vehicle wear. Option to purchase at lease end for an amount may be determined at lease signing. Payments may be higher in some states. You may not be able to combine other incentives with the purchase financing or leasing programs presented above. Residency restrictions may apply. See dealer for details.
Listed APR, down payment, payments, incentives and other terms are estimates for example purposes only. Information provided is based on very well-qualified buyers or lessees. The payment information provided here is not a commitment by any organization to provide credit, leases or other programs. Some customers may not qualify for listed programs. Your terms may vary. Lessor must approve lease. Credit approval required.