New 2026 GMCSierra 2500 HD SLT
- Exterior Color
- Sterling
- Interior Color
- Jet Black
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT4UNE76TF126518
- Stock Number
- G5407
Highlighted Features
- 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
- Auto high-beam headlights
Included Packages & Accessories
- Black Front and Rear Molded Splash Guards
- GMC MultiPro Tailgate
- Upfitter Switch Kit
- Radio: AM/FM Stereo with Premium GMC Infotainment System
- Front License Plate Kit
- Transmission: 10-Speed Automatic
- Wheels: 18" Machined Aluminum
- 3.73 Rear Axle Ratio
- All-Weather Floor Liners
- Adaptive Cruise Control
- Wireless Charging
- SLT Preferred Package
- Heated 2nd Row Outboard Seats
- Power Sliding Rear Window with Defogger
- Universal Home Remote
- 220-Amp Alternator
- Skid Plates
- Gooseneck/5th Wheel Prep Package
- Spray-on Pickup Bedliner with GMC Logo
- Preferred Equipment Group 4SA
- Sierra HD Pro Safety
- Forward Collision Alert
- Following Distance Indicator
- Front Pedestrian Braking
- IntelliBeam Automatic High Beam on/Off
- Lane Departure Warning
- Buckle to Drive
- Automatic Emergency Braking
- Wireless Phone Projection
- 6-Speaker Audio System Feature
- SiriusXM with 360L Trial Subscription
- Electric Rear-Window Defogger
- Push Button Start
- Remote Vehicle Starter System
- Keyless Open and Start
- OnStar Services Capable
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 Charge/Data USB Ports
- 2 Charge-Only Rear USB Ports
- Front 40/20/40 Split-Bench Seats
- 10-Way Power Driver Seat Adjuster with Lumbar
- 10-Way Power Passenger Seat Adjuster with Lumbar
- Driver Memory
- Heated Driver and Front Outboard Passenger Seats
- Deep-Tinted Glass
- Chrome Surround Grille with Chrome Insert Bars
- Steering Wheel Audio Controls
- LED Cargo Area Lighting
- Manual Tilt-Wheel/Telescoping Steering Column
- Unauthorized Entry Theft-Deterrent System
- Power Front Passenger Windows with Express Up/Down
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- ProGrade Trailering System
- Hitch Guidance with Hitch View
- in-Vehicle Trailering System App
- Engine: 6.6L V8 with Direct Injection and Variable Valve Timing
- Heavy-Duty 80 Amp Battery
- GVWR: 10,850 lbs
- 2-Speed Active Transfer Case
- Safety Alert Seat
- Trailer Side Blind Zone Alert
- Ultrasonic Front and Rear Park Assist
- Floor-Mounted Center Console
- Ventilated Driver and Front Passenger Seats
- Hill Descent Control
- Front Bucket Seats
- Snow Plow Prep/Camper Package
- Sierra HD Pro Safety Plus Package
- Rear Cross Traffic Alert
- Bed View Camera with Two Trailer Camera Provisions
- HD Surround Vision
- Trailer Cam Provisions and Trailer Viewing Software
- SLT Convenience Package
- 2 Charge/Data USB Ports Inside Center Console
- LED Smoked Amber Roof Marker Lamps
- Bose Premium 7-Speaker Sound System
- 6" Rectangular Chromed Tubular Assist Steps
- X31 Off-Road Package
- Off-Road Suspension
- SLT Premium Package
- Tires: LT275/70R18E AT BW
- LT275/70R18 AT BW Spare Tire
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
- 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 yes
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 275/70SR18.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 275/70SR18.0E
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- Wheel size: 18"
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM with 360L
- Primary LCD size: 13.4"
- 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
- 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
- Compressor: Not Available
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Horsepower: 401hp @ 5,200RPM
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 16
- Rear locking differential
- Recommended fuel: Regular Unleaded
- Standard fuel economy fuel type: gasoline
- Torque: 464 lb.-ft. @ 4,000RPM
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: chrome
- Door mirrors: chrome
- 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
- Compression ratio: 10.80 to 1
- Curb weight: 3,220kg (7,099lbs)
- Engine bore x stroke: 103.3mm x 98.0mm (4.07" x 3.86")
- Engine displacement: 6.6 L
- Engine torque: 464 lb.-ft. @ 4,000RPM
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,027mm (79.8")
- Exterior length: 6,369mm (250.8")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- GVWR: 4,921kg (10,850lbs)
- Payload: 1,681kg (3,707lbs)
- 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")
- Towing capacity: 7,257kg (16,000lbs)
- 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: 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 Alert warning
- Security system
- Tracker system: Stolen Vehicle Assistance
- Traction control
Standard Features
- SLT Convenience Package
- SLT Preferred Package
- Sierra HD Pro Safety Plus Package
- 6" Rectangular Chromed Tubular Assist Steps
- Spray-on Pickup Bedliner with GMC Logo
- Front Bucket Seats
- Ventilated Driver and Front Passenger Seats
- 2 Charge/Data USB Ports Inside Center Console
- LED Smoked Amber Roof Marker Lamps
- Wireless Charging
- Bose Premium 7-Speaker Sound System
- Trailer Side Blind Zone Alert
- Rear Cross Traffic Alert
- Bed View Camera with Two Trailer Camera Provisions
- HD Surround Vision
- Ultrasonic Front and Rear Park Assist
- Trailer Cam Provisions and Trailer Viewing Software
- Safety Alert Seat
- Spray-on Pickup Bedliner with GMC Logo
- Heated 2nd Row Outboard Seats
- Power Sliding Rear Window with Defogger
- Universal Home Remote
- Adaptive Cruise Control
- 220-Amp Alternator
- Skid Plates
- Hill Descent Control
- Skid Plates
- Off-Road Suspension
- Forward Collision Alert
- Following Distance Indicator
- Front Pedestrian Braking
- IntelliBeam Automatic High Beam on/Off
- Lane Departure Warning
- Buckle to Drive
- Automatic Emergency Braking
- LT275/70R18 AT BW Spare Tire
- Floor-Mounted Center Console
- Sierra HD Pro Safety
- Wireless Phone Projection
- 6-Speaker Audio System Feature
- SiriusXM with 360L Trial Subscription
- Electric Rear-Window Defogger
- Push Button Start
- Remote Vehicle Starter System
- Keyless Open and Start
- OnStar Services Capable
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 Charge/Data USB Ports
- 2 Charge-Only Rear USB Ports
- Front 40/20/40 Split-Bench Seats
- Heated Driver and Front Outboard Passenger Seats
- Deep-Tinted Glass
- Chrome Surround Grille with Chrome Insert Bars
- Steering Wheel Audio Controls
- LED Cargo Area Lighting
- Manual Tilt-Wheel/Telescoping Steering Column
- Unauthorized Entry Theft-Deterrent System
- Power Front Passenger Windows with Express Up/Down
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- ProGrade Trailering System
- Engine: 6.6L V8 with Direct Injection and Variable Valve Timing
- 2-Speed Active Transfer Case
- 10-Way Power Driver Seat Adjuster with Lumbar
- 10-Way Power Passenger Seat Adjuster with Lumbar
- Driver Memory
- Heavy-Duty 80 Amp Battery
- GVWR: 10,850 lbs
- Hitch Guidance with Hitch View
- in-Vehicle Trailering System App
KBB.com Consumer Reviews
- 2.0
Transmission trash
By Jason on Monday, April 07, 2025
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk - 5.0
Fantastic truck
By Jjj on Sunday, November 07, 2021
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck! - 3.0
Don't judge a truck by the appearance
By jmil on Wednesday, May 11, 2022
Great truck, loved it until the DEF tank heater malfunctioned and shut down the truck. Now sitting waiting for the replacement tank for over 10 weeks. Turns out every HD truck 2020 and 2021 has the same problem and all will need this replacement that is being produced at a snail's pace by GM. Per the dealership, last count, over 9000 trucks like mine are idle waiting for this part. $65000 waste of money and terrible service by GMC (not the local dealership).
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