Elevate your driving experience with the 2025 GMC Sierra 2500HD SLT, a true powerhouse that combines uncompromising capability and refined sophistication. This exceptional truck is more than just a workhorse; it's a testament to GMC's commitment to engineering excellence.
Boasting a suite of premium features, the Sierra 2500HD SLT is tailored to meet the demands of the modern driver. Highlights include:
⢠Safety Inspection
⢠6.6L V8 Diesel Turbocharged (Duramax) (B20-Diesel Compatible)
⢠SLT Premium Package
⢠X31 Off-Road and Protection Package
⢠Gooseneck / 5th Wheel Prep Package
⢠Hitch Package (LPO)
⢠3 Years SiriusXM
Beneath the bold, commanding presence of the Sierra 2500HD SLT lies a heart of pure power. The Duramax 6.6L V8 Turbodiesel engine delivers an impressive 470 horsepower and an astounding 975 lb-ft of torque, ensuring you have the muscle to tackle any task with ease. Paired with a 10-speed automatic transmission and 4-wheel drive, this truck is built to conquer even the most demanding terrain.
Designed with your comfort and convenience in mind, the Sierra 2500HD SLT offers a wealth of premium amenities. From the heated and ventilated front seats to the Bose premium audio system, every detail has been thoughtfully crafted to elevate your driving experience. The SLT Premium Package further enhances the package with features like the SLT Convenience Package, SLT Preferred Package, and Sierra HD Pro Safety Plus Package, ensuring you enjoy the ultimate in luxury and peace of mind.
For those seeking off-road adventure, the X31 Off-Road and Protection Package is a must-have. This package includes an off-road-tuned suspension with twin-tube Rancho shocks, hill descent control, and skid plates to protect vital components, making it the perfect companion for your next outdoor expedition.
Completing the package is the Gooseneck / 5th Wheel Prep Package, which allows you to seamlessly integrate a gooseneck or 5th wheel hitch, expanding the Sierra 2500HD SLT's towing capabilities to new heights.
Experience the ultimate in power, capability, and refined luxury with the 2025 GMC Sierra 2500HD SLT. This exceptional truck is the perfect blend of form and function, ready to elevate your driving experience to new levels.
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New 2025 GMCSierra 2500 HD SLT
- Exterior Color
- Volcanic Red Tintcoat
- Interior Color
- Black
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT4UNEY2SF323161
- Stock Number
- 25009
Highlighted Features
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Wireless phone connectivity
- Exterior parking camera rear
- Front dual zone A/C
- Auto high-beam headlights
- Rain sensing wipers
- Auto-dimming rearview mirror
- Split folding rear seat
- Memory seat
Included Packages & Accessories
- Hitch Package (LPO)
- Suspension Package
- X31 Off-Road & Protection Package
- 3 Years SiriusXM
- 6 Speakers
- AM/FM radio: SiriusXM with 360L
- Radio: AM/FM w/Premium GMC Infotainment System
- SiriusXM w/360L Trial Subscription
- Air Conditioning
- Automatic temperature control
- Front dual zone A/C
- Rear window defroster
- Memory seat
- Power driver seat
- Power steering
- Power windows
- Remote keyless entry
- Steering wheel mounted audio controls
- 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 & Start
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Pickup Box
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Auto High-beam Headlights
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Speed control
- 220-Amp Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- Auto-dimming door mirrors
- Bumpers: chrome
- Chrome Surround Grille w/Chrome Insert Bars
- Heated door mirrors
- IntelliBeam Automatic High Beam On/Off
- Power door mirrors
- Rear step bumper
- Spray-On Pickup Bedliner w/GMC Logo
- Turn signal indicator mirrors
- Winter Grille Cover
- All-Weather Floor Liners (LPO)
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Automatic Emergency Braking
- Bed View Camera w/2 Trailer Camera Provisions
- Buckle to Drive
- Compass
- Driver door bin
- Driver vanity mirror
- Following Distance Indicator
- Forward Collision Alert
- Front Pedestrian Braking
- Front reading lights
- Heated steering wheel
- Illuminated entry
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear reading lights
- Rear seat center armrest
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trailer Cam Provisions & Trailer Viewing Software
- Trip computer
- Ultrasonic Front & Rear Park Assist
- Voltmeter
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Heated Driver & Front Outboard Passenger Seats
- Heated front seats
- Perf Leather-Appointed Front Outboard Seat Trim
- Power passenger seat
- Rear Underseat Storage (LPO)
- Split folding rear seat
- Ventilated Driver & Front Passenger Seats
- Front Center Armrest w/Storage
- Passenger door bin
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering System App
- 18" Machined Aluminum Wheels
- Alloy wheels
- Wheels: 20" Bright Face w/Dark Painted Pockets
- Power Front Passenger Windows w/Express Up/Down
- Power Sliding Rear Window w/Defogger
- Rain sensing wipers
- Variably intermittent wipers
- Safety Inspection
- Gooseneck/5th Wheel Prep Package
- Preferred Equipment Group 4SA
- Sierra HD Pro Safety Plus Package
- SLT Convenience Package
- SLT Preferred Package
- SLT Premium Package
- X31 Off-Road Package
- 6-Speaker Audio System Feature
- Bose Premium 7-Speaker Sound System
- Steering Wheel Audio Controls
- Electric Rear-Window Defogger
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Push Button Start
- Remote Vehicle Starter System
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Off-Road Suspension
- Hill Descent Control
- Unauthorized Entry Theft-Deterrent System
- Adaptive Cruise Control
- 2-Speed Active Transfer Case
- 6" Rectangular Chromed Tubular Assist Steps
- LED Cargo Area Lighting
- LED Smoked Amber Roof Marker Lamps
- Rear Wheelhouse Liners
- 2 Charge-Only Rear USB Ports
- 2 Charge/Data USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- Floor-Mounted Center Console
- Front 40/20/40 Split-Bench Seats
- HD Rear Vision Camera Delete
- HD Surround Vision
- OnStar Services Capable
- Rear Cross Traffic Alert
- Trailer Side Blind Zone Alert
- Wireless Charging
- Wireless Phone Projection
- Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Safety Alert Seat
- Deep-Tinted Glass
- Front Rain-Sensing Wipers
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
- 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: keyfob and smart device (subscription required)
- Remote keyless entry
- Speed control
- 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
- Primary LCD size: 13.4"
- Smart device integration: Apple CarPlay/Android Auto
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless phone connectivity: Bluetooth
- Basic warranty: 36 months/36,000miles
- Corrosion perforation warranty: 72 months/100,000miles
- Maintenance warranty: 12 months/ unlimited distance
- Heated front seats
- Leather upholstery
- 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
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Standard fuel economy fuel type: gasoline
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- 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
- 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 headroom: 1,093mm (43.0")
- 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
- Compass
- Configurable
- Delay-off headlights
- Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
- 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
- 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
- Security system
- Traction control
Standard Features
- SLT Convenience Package
- SLT Preferred Package
- Sierra HD Pro Safety Plus Package
- 6" Rectangular Chromed Tubular Assist Steps
- Front Bucket 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
- HD Surround Vision
- Safety Alert Seat
- Heated 2nd Row Outboard Seats
- Universal Home Remote
- Adaptive Cruise Control
- Hill Descent Control
- Off-Road Suspension
- Wireless Phone Projection
- 6-Speaker Audio System Feature
- Electric Rear-Window Defogger
- Push Button Start
- Remote Vehicle Starter System
- 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
- Deep-Tinted Glass
- Steering Wheel Audio Controls
- LED Cargo Area Lighting
- Manual Tilt-Wheel/Telescoping Steering Column
- Unauthorized Entry Theft-Deterrent System
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- 2-Speed Active Transfer Case
- Driver Memory
- Floor-Mounted Center Console
- HD Rear Vision Camera Delete
Dealer Notes
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 - 3.0
Infotainment system unreliable!
By Brian C on Friday, June 27, 2025
The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another. - 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!