Onyx Black 2025 GMC Sierra 2500HD AT4 4WD 10-Speed Automatic 6.6L V8
Recent Arrival!
Thanks for checking out our inventory! Please call with any questions at 608-241-1122, or visit us at High Crossing Blvd. In Madison, WI 53718. **All prices on our web site are subject to change without notice. We make every effort to provide you the most accurate, up-to-date information. The dealership should be contacted for final pricing and availability. Every feature listed on the Factory window sticker may not be available. Please contact a Sales Person if you have any questions. Tax, Title, License, and $399 Dealer Services Fee are not included in vehicle prices shown and must be paid by the purchaser. Price includes: Dealer Discount is Available Everyone.$1000 - Buick & GMC Consumer Cash Program. Exp. 09/02/2025
New 2025 GMCSierra 2500 HD AT4
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT4UPE71SF311991
- Stock Number
- G250791
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
- Preferred Equipment Group 4SB
- 3.73 Rear Axle Ratio
- Wheels: 20" High Gloss Black 8 Spokes Aluminum
- Perforated Leather-Appointed Front Seat Trim
- 10-Way Power Driver Seat Adjuster w/Lumbar
- AT4 Preferred Package
- AT4 Premium Plus Package
- Technology Package
- Radio: AM/FM w/Premium GMC Infotainment System
- Electric Rear-Window Defogger
- Front Prem Floor Liners w/Removable Carpet Insert
- 1st & 2nd Rows All-Weather Floor Liners (LPO)
- 120-Volt Instrument Panel Power Outlet
- 2 Charge-Only Rear USB Ports
- Power Sunroof
- Rear Underseat Storage (LPO)
- Console-Mounted Safe (LPO)
- Spray-On Pickup Bedliner w/GMC Logo
- Deep-Tinted Glass
- Front License Plate Kit
- LED Smoked Amber Roof Marker Lamps
- LED Cargo Area Lighting
- Pickup Box
- Rear Wheelhouse Liners
- Off-Road High Clearance Step (LPO)
- Snow Plow Prep/Camper Package
- 220-Amp Alternator
- Off-Road Suspension
- 2-Speed Active Transfer Case
- Inside Rearview Auto-Dimming Rear Camera Mirror
- SiriusXM w/360L Trial Subscription
- Driver Memory
- Power Sliding Rear Window w/Defogger
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Power Front Passenger Windows w/Express Up/Down
- Keyless Open & Start
- Rear Prem Floor Liners w/Removable Carpet Insert
- Push Button Start
- Remote Vehicle Starter System
- Front Rain-Sensing Wipers
- Floor-Mounted Center Console
- Gloss Black Header Grille & Grille Insert Bars
- Safety Alert Seat
- Hill Descent Control
- Wireless Charging
- Heated Driver & Front Outboard Passenger Seats
- Heated 2nd Row Outboard Seats
- 120-Volt Bed Mounted Power Outlet
- Ventilated Driver & Front Passenger Seats
- Heavy-Duty 80 Amp Battery
- Manual Tilt-Wheel/Telescoping Steering Column
- Wireless Phone Projection
- ProGrade Trailering System
- Hitch Guidance w/Hitch View
- Buckle to Drive
- IntelliBeam Automatic High Beam On/Off
- Trailer Cam Provisions & Trailer Viewing Software
- 2 Charge/Data USB Ports Inside Center Console
- 2 USB Ports
- Ultrasonic Front & Rear Park Assist
- OnStar Services Capable
- Following Distance Indicator
- In-Vehicle Trailering System App
- Forward Collision Alert
- Rear Cross Traffic Alert
- Lane Departure Warning System
- Universal Home Remote
- Automatic Emergency Braking
- Steering Wheel Audio Controls
- Front Pedestrian Braking
- Trailer Side Blind Zone Alert
- Bose Premium 7-Speaker Sound System
- Unauthorized Entry Theft-Deterrent System
- HD Surround Vision
- Multicolor 15" Diagonal Head-Up Display
- Bed View Camera w/2 Trailer Camera Provisions
- X31 Off-Road Package
- 4-Wheel Disc Brakes
- Apple CarPlay/Android Auto
- Emergency communication system: OnStar
- AM/FM radio: SiriusXM with 360L
- Auto High-beam Headlights
- Compass
- 7 Speakers
- Auto-dimming Rear-View mirror
- Ventilated front seats
- Variably intermittent wipers
- Turn signal indicator mirrors
- Trip computer
- Traction control
- Tilt steering wheel
- Telescoping steering wheel
- Steering wheel mounted audio controls
- Split folding rear seat
- Speed-sensing steering
- Speed control
- Security system
- Remote keyless entry
- Rear window defroster
- Rear step bumper
- Rear seat center armrest
- Rear reading lights
- Rain sensing wipers
- Power windows
- Power steering
- Power passenger seat
- Power driver seat
- Power door mirrors
- Passenger vanity mirror
- Passenger door bin
- Panic alarm
- Overhead console
- Overhead airbag
- Outside temperature display
- Occupant sensing airbag
- Memory seat
- Low tire pressure warning
- Illuminated entry
- Heated steering wheel
- Heated rear seats
- Heated front seats
- Heated door mirrors
- Fully automatic headlights
- Front wheel independent suspension
- Front reading lights
- Front fog lights
- Front dual zone A/C
- Front anti-roll bar
- Dual front side impact airbags
- Dual front impact airbags
- Driver vanity mirror
- Driver door bin
- Delay-off headlights
- Bumpers: body-color
- Brake assist
- Automatic temperature control
- Auto-dimming door mirrors
- Alloy wheels
- ABS brakes
- Voltmeter
- Tachometer
- Front Center Armrest
- Front Bucket Seats
- Electronic Stability Control
- Air Conditioning
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
- 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
- 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/ unlimited distance
- 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
- 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
- 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 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
- 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
- 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).