Used 2026 GMC Sierra 1500 AT4
10-Speed Automatic
Vehicle Summary
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Sterling Metallic
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Jet Black w/Kalahari Accents
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VIN 1GTUUEE86TZ125070
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Stock # 26BR07034A
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Condition Used
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Exterior Sterling Metallic
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Interior Jet Black w/Kalahari Accents
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Engine 3.0L I6
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Fuel Type Diesel
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Drivetrain 4x4
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Transmission 10-Speed Automatic
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Location Diehl of Butler
Mileage
Miles
MPG FUEL ECONOMY
CITY
HWY
COMBINED
Performance
HP
Torque
Key Features
Collision Avoidance
Backup Camera
Tow Package
Lane Departure Warning
Lane Keep Assist
Blind Spot Monitor
Parking Assist
Fog Lights
Side-Impact Air Bags
Bluetooth
Satellite Radio
Alloy Wheels
Heated Seats
Leather Seats
Automatic Climate Control
Adaptive Cruise Control
Cruise Control
Remote Start
Push Start
Keyless Entry
Android Auto
Apple Car Play
Wifi Hotspot
Navigation System
Premium Package
Sunroof/Moonroof
Wireless Phone Charging
Technology Package
Vehicle Description
Meet the 2026 GMC Sierra 1500 AT4, a sophisticated full-size truck designed for those who demand capability without compromise. This Silver beauty combines refined engineering with genuine off-road readiness, backed by meticulous attention to detail and premium construction standards.
- Power Sunroof
- Technology Package with Rear Camera Mirror and 15" Head-Up Display
- AT4 Premium Package with Off-Road High Clearance Steps
- Perforated Front Leather Seat Trim with Heated and Ventilated Driver and Passenger Seating
- Premium Bose 7-Speaker Sound System with SiriusXM
- Wireless Apple CarPlay and Android Auto Integration
- Off-Road Suspension with Auto-Locking Rear Differential
- Spray-on Pickup Bedliner with GMC Logo
- Multicolor 15" Diagonal Head-Up Display
- Bed View Camera and HD Surround Vision
- Heated Steering Wheel and Heated Rear Seats
- Remote Vehicle Starter System
- All-Weather Floor Liners with AT4 Logo
- Engine Block Heater
- Alloy Wheels: 20" x 9" Machined Aluminum
The AT4 delivers a commanding presence on any surface. The 3.0L I6 engine paired with a 10-speed automatic transmission produces responsive power, achieving 22 city and 26 highway MPG, making it practical for both daily commuting and extended journeys. The 4WD system, combined with off-road suspension and an auto-locking rear differential, ensures capable performance when the pavement ends.
Inside, luxury meets functionality. Premium leather seating with heating and ventilation technology keeps you comfortable mile after mile. The heated steering wheel responds to cold climates, while the wireless charging pad and extensive USB connectivity keep your devices powered throughout your day. Entertainment flows seamlessly through the Bose sound system with SiriusXM capability, while Apple CarPlay and Android Auto put your digital life at your fingertips.
Technology enhances both safety and convenience throughout the cab. The power sunroof floods the interior with natural light, while the 15-inch head-up display keeps critical information in your line of sight. The rear camera mirror, bed view camera, and surround vision system eliminate blind spots and build confidence during tight maneuvers. Forward collision alert, automatic emergency braking, lane departure warning, and rear cross traffic braking work together to support your awareness on the road.
Practicality defines the Sierra 1500 AT4. The spray-on bedliner protects your cargo area, while the power sliding rear window with defogger improves ventilation and bed access. All-weather floor liners safeguard the interior, and the integrated trailer brake controller with in-vehicle trailering system app makes towing straightforward and secure.
This 2026 Sierra 1500 AT4 represents genuine truck craftsmanship—a vehicle that refuses to compromise between capability and refinement. With 11,716 miles, it's been lightly used and thoroughly maintained, ready for years of dependable service. We invite you to experience this outstanding truck firsthand and discover why it stands apart in its class.
Vehicle Features
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Interior
- Ventilated driver and front passenger seats
- Heated steering wheel
- Heated driver and front passenger seats
- Heated rear seats
- Leather front seat upholstery
- Driver seat power reclining, lumbar support, cushion tilt, fore/aft control and height adjustable control
- Dual-zone front climate control
- Voice-activated climate control
- Automatic climate control
- Power tilting steering wheel
- Power telescopic steering wheel
- Vinyl rear seat upholstery
- Rear console climate control ducts
- Bucket front seats
- Driver seat with 8-way directional controls
- Front seat center armrest
- Front passenger seat with 8-way directional controls
- Driver seat with 2-way power lumbar
- Front passenger seat with 2-way power lumbar
- Leatherette steering wheel
- Split-bench rear seat
- Fold-up rear seat cushion
- 60-40 folding rear seats
- Rear seat center armrest
- Seating capacity: 5
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Exterior
- Vehicle to trailer hitching assist
- Trailer light test
- Trailer light malfunction warning
- Trailer theft alarm
- Trailer brake controller
- Trailer sway control
- Vehicle and trailer reverse assist with visual graphic guidance only
- Trailer hitch light
- 20 x 9-inch front and rear machined w/painted accents aluminum wheels
- P275/60SR20 AT BSW front and rear tires
- Trailer wiring harness
- Class IV tow rating
- Trailer hitch
- 2 underbody skid plates
- Spray-in pickup bed liner
- Pickup bed-rail protectors
- Full-size spare tire with steel wheel
- Crank-down spare tire
- 2 front tow hooks
- LED in-box lighting
- 4 doors
- Standard style pickup box
- Galvanized steel/aluminum body panels with side impact beams
- Body-colored front bumper
- Body-colored rear bumper
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Mechanical
- AutoTrac part and full-time 4WD
- Duramax 3L I-6 diesel direct injection, DOHC, variable valve control, intercooled turbo, diesel, engine with 305HP
- Duramax 3L I-6 DOHC
- Auto stop-start engine
- Intercooled turbo
- 10-speed automatic
- Selectable mode transmission
- Transmission electronic control
- Sequential shift with steering wheel controls
- Automatic
- Four-wheel drive
- Two-Speed Transfer Case
- Off-road ride suspension
- Speed sensitive power steering
- Lock-up transmission
- Engine block heater
- Front mounted engine
- Compression ignition system
- Variable intake manifold
- Longitudinal mounted engine
- Aluminum engine block
- Aluminum cylinder head
- Overdrive transmission
- Powertrain type: ICE
- All-speed ABS and driveline traction control
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Safety
- Forward Collision Alert with Automatic Braking
- Front Pedestrian Braking
- HD Rear Vision Camera w/Hitch View rear mounted camera
- Lane Keep Assist with Lane Departure Warning
- Rear Cross Traffic Braking collision mitigation
- Automatic Emergency Braking predictive brake assist system
- Teen Driver restricted driving mode/alerts
- Rear Pedestrian Alert rear pedestrian detection warning
- HD Surround Vision w/Hitch View aerial view camera
- Stolen Vehicle Assistance vehicle tracker with vehicle slowdown
- Gauge cluster display size: 12.30
- Front mounted camera with washer
- Right side camera
- Left side camera
- Trailer Side Blind Zone Alert blind spot warning
- Following Distance Indicator
- IntelliBeam auto high-beam headlights
- Immobilizer
- Digital/analog instrumentation display
- Configurable instrumentation gauges
- StabiliTrak w/Proactive Roll Avoidance electronic stability control system with anti-roll
- Hill Descent Control (HDC)
- Hill Start Assist (HSA)
- Front and Rear Park Assist front and rear parking sensors
- LED daytime running lights
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Entertainment
- Primary monitor touchscreen
- Bluetooth wireless audio streaming
- Bose speakers
- Premium GMC Infotainment System external memory control
- Internet radio capability
- Premium GMC Infotainment System voice activated audio controls
- AM/FM/SiriusXM with 360Lsatellite
- 2 total number of 1st row displays
- 13.4 inch primary display
- Amplifier
- 7 speakers
- Seek scan
- Radio data system (RDS)
- 3 month satellite trial subscription
- Fixed audio antenna
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Crash Safety Ratings
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FRONT
4 STAR
ROLLOVER
4 STAR
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Factory Warranty
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Basic warranty
36 month/36,000 miles
*Confirm any warranty information with dealer before purchase.Powertrain warranty
60 month/100,000 miles (FLT)
*Confirm any warranty information with dealer before purchase.Corrosion perforation warranty
72 month/100,000 miles
*Confirm any warranty information with dealer before purchase.Roadside warranty
60 month/100,000 miles (FLT)
*Confirm any warranty information with dealer before purchase.
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Disclaimers
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Diehl Automotive utilizes a system that generates market value pricing automatically for new and pre-owned vehicles and may cause errors, inaccuracies, or omissions. Some aftermarket additions or accessories may not be displayed properly. For accuracy, please contact the dealer for real-time, accurate pricing. A documentation fee of $490 for vehicles in Pennsylvania, and a documentation fee of $398 in Ohio is included in the pricing. Tax, title, and tags are not included and must be paid by the purchaser. Some prices may include manufacturer-to-dealer offers that are not compatible with manufacturer special finance programs and/or lease offers. While great effort is made to ensure the accuracy of the information on this site, errors do occur, so please verify information with a customer service representative. This is easily done by calling us at 724.608.3331 or by visiting us at the dealership.
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