
2026 GMC Sierra 1500 AT4
- Used
- Diesel
The highlights
- Navigation system
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication 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
The full 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
- Navigation system
- 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
- Speed-sensing steering
- Tires: all-terrain
- 1st row LCD monitors: 2
- Primary LCD size: 13.4"
- Radio data system
- 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
- 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
- Drive type: four-wheel
- Electric motor 1 torque: none
- Electric motor horsepower: none
- Engine location: front
- Fuel economy city: 22mpg
- Fuel economy combined: 24mpg
- Fuel economy highway: 26mpg
- Fuel tank capacity: 24.0gal.
- 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 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
- Exterior body width: 2,063mm (81.2")
- Exterior height: 1,990mm (78.3")
- Exterior length: 5,916mm (232.9")
- Front hiproom: 1,544mm (60.8")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,638mm (64.5")
- Greenhouse Gas Score (GG): 4
- 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")
- 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 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 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
- Traction control
Notes from the dealer
Highlights
CARFAX 1-Owner, well-maintained vehicle with consistent service history adds $1,500+ in resale confidence
Clean ownership record with no reported concerns estimated $1,000 value in risk reduction
Maryland State Inspected (MSI) 120+ point inspection performed by trained technicians. Buyers can take pride knowing Maryland has one of the most comprehensive state inspections in the country. ($1,200+ value)
Factory powertrain warranty remaining estimated $2,500 $4,000 future savings
Off-road-ready AT4 package with factory-engineered equipment $3,500+ added capability value
Key Features & Options
3.0L Duramax Turbo-Diesel I6 engine delivers exceptional torque and efficiency $2,000+ value over standard gas engines
Advanced 4WD system with Auto-Locking Rear Differential and Off-Road Suspension for enhanced trail performance $2,500 value in capability upgrades
Premium GMC Infotainment System with Navigation, SiriusXM 360L, and Bose 7-Speaker Audio $1,500+ technology and entertainment value
Heated leather seating with driver memory, dual-zone automatic climate control, and power-adjustable seats for comfort and convenience $1,800+ luxury value
120-Volt bed and interior power outlets for jobsite or recreational versatility $600 functional upgrade value
IntelliBeam automatic high beams, LED cargo lighting, fog lights, and perimeter lighting improve visibility and safety $1,200+ value
Remote keyless entry, push-button start, and universal home remote for everyday convenience $500+ value
Heavy-duty components including 220-amp alternator, engine block heater, and air filtration system for durability $1,000+ long-term reliability value
Warranty & Peace of Mind
This Sierra AT4 retains a portion of its original factory warranty, providing ongoing coverage for major components and protecting against unexpected repair costs. Combined with its strong service history and clean report, this truck offers excellent long-term ownership confidence.
Why Buy From Us
This vehicle is presented by Ourisman Honda of Frederick, where we proudly offer our ONE Person UPFRONT Pricing Sales experience. From your first question to final delivery, you'll work with one dedicated, salaried Client Advisor whose pay isn't tied to price so the guidance you receive is honest, consistent, and focused entirely on your needs. Prices on vehicles include freight and destination charges (applies to new vehicles only) , as well as an $800 Dealer Processing Charge (Not Required By Law).The 2026 GMC Sierra 1500 AT4 4WD in striking Volcanic Red with Jet Black and Kalahari Leather interior is a premium off-road pickup engineered for capability and refinement. Powered by a 3.0L Duramax Turbo-Diesel engine paired with a 10-speed automatic transmission, this Sierra delivers impressive torque, fuel efficiency, and towing confidence. This well-maintained, CARFAX 1-owner vehicle shows a strong history of care and has passed a thorough Maryland inspection, giving buyers added confidence and peace of mind.
Highlights
CARFAX 1-Owner, well-maintained vehicle with consistent service history adds $1,500+ in resale confidence
Clean ownership record with no reported concerns estimated $1,000 value in risk reduction
Maryland State Inspected (MSI) 120+ point inspection performed by trained technicians. Buyers can take pride knowing Maryland has one of the most comprehensive
Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
A name you can trust
KBB.com Consumer Reviews
What is included in our price - Prices on vehicles include freight and destination charges, as well as an $800 Dealer Processing Charge (Not Required By Law). Ourisman All In Prices does not include government fees, such as taxes, tag and title fees, or electronic titling fees. All new vehicle prices include destination which is posted on the Vehicle Monroney Label (Window Sticker). Incentives and pricing may depend on manufacturer incentive program expiration dates which can vary. Buyers may qualify for additional offers and incentives like military, loyalty, diplomat or college graduation that are not included in advertised prices. See the dealer for further details.
What is excluded in our price - All advertised prices exclude taxes, tags, titling fees, and additional government fees.
Other Considerations- Advertised prices may not be compatible with "special factory financing". MSRP Is the Manufacturers Suggested Retail Price. Actual dealer pricing may vary.
Images- Due to availability, some pictures may be stock photo examples and not the actual car itself. These photos may not reflect the exact vehicle color, trim, options, or other specifications. Some vehicles may be in transit to the dealership. Please call or e mail prior to arriving at the dealership to confirm availability.
Availability- All Vehicles are subject to prior sale and may not be available. Check your dealer for specific vehicle availability. All financing is subject to Lender approval based upon Customer approved credit. Ourisman is not a Lender, but will assist Customer with Lender required submissions at Customer request
Range Rating - 296 mile EPA Range Rating for EX (2WD) and Touring (2WD). 281 mile EPA Range Rating for EX (AWD) and Touring (AWD). 273 mile EPA Range Rating for Elite (AWD). Use for comparison purposes only. Actual range will vary based on several factors, including temperature, terrain, battery age & condition, loading, use and maintenance.
Disclaimer- Ourisman makes every effort to provide accurate information. Please verify options, price, and incentive eligibility prior to purchase by contacting the dealership for verification and availability. Pricing is subject to change without notice to correct errors and omissions. Manufacturer incentives and vehicle features data are provided by third-parties and are believed to be accurate. Neither the dealer nor website provider is responsible for any inaccuracies contained herein, and by using this application you the customer acknowledge the foregoing and accept such terms. Please contact the dealership for details and availability.
