*Prices may include manufacturer rebates and offers not available to all buyers. Prices shown exclude tax, tag, and doc fees. Every effort is made to ensure accurate prices, options, and features, however, in the event of a mistake, dealer cannot be held liable.
New 2026 GMCSierra 2500 HD Pro 6.6L V-8 cyl Truck Crew Cab
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black
- Body/Seating
- Truck Crew Cab/6 seats
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT4ULE72TF143031
- Stock Number
- SB6121
Highlighted Features
- Lane departure
- Emergency communication system
- Wireless phone connectivity
- Exterior parking camera rear
- Auto high-beam headlights
- Split folding rear seat
- Perimeter/approach lights
- Remote keyless entry
- Fully automatic headlights
- Alloy wheels
- Bedliner
- Heated door mirrors
Included Packages & Accessories
- Preferred Equipment Group 1SA
- 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
- Push Button Start
- Remote Keyless Entry
- OnStar Services Capable
- 2 Charge/Data USB Ports
- Solar Absorbing Tinted Glass
- Chrome Grille with Flat Black Grille Insert Bars
- Engine: 6.6L V8 with Direct Injection and Variable Valve Timing
- Heavy-Duty 80 Amp Battery
- GVWR: 10,450 lbs
- 2-Speed Electronic Shift Transfer Case
- 4-Way Manual Driver Seat Adjuster
- Pickup Box
- Radio: AM/FM with GMC Infotainment System
- 6-Speaker Audio System Feature
- Deep-Tinted Glass
- EZ Lift Power Lock and Release Tailgate
- Front License Plate Kit
- Electric Rear-Window Defogger
- Outside Power-Adjustable Black Mirrors
- Spray-on Pickup Bedliner
- Transmission: 10-Speed Automatic
- Front 40/20/40 Split-Bench Seats
- 4-Way Manual Passenger Seat Adjuster
- LT245/75R17E AS BW Spare Tire
- LED Cargo Area Lighting
- 3.73 Rear Axle Ratio
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- All-Weather Floor Liners
- Color-Keyed Carpeting Floor Covering
- Front Rubberized-Vinyl Floor Mats
- Rear Rubberized-Vinyl Floor Mats
- 2 Charge-Only Rear USB Ports
- Skid Plates
- Black Front and Rear Molded Splash Guards
- 6" Rectangular Black Tubular Assist Steps
- 220-Amp Alternator
- Convenience Package
- Tires: LT245/75R17E AS BW
- Snow Plow Prep/Camper Package
- Wheels: 17" Machined Aluminum
Detailed Specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Driver door bin
- Emergency communication system: OnStar
- Front beverage holders
- Illuminated entry
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: push button start only
- Rear door bins
- Remote keyless entry
- Speed control
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 245/75SR17.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 245/75SR17.0E
- Single rear wheels
- Wheel size: 17"
- 1st row LCD monitors: 1
- AM/FM radio
- Primary LCD size: 7.0"
- Smart device integration: Apple CarPlay/Android Auto
- Speakers: 6
- 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
- Powertrain warranty: 60 months/60,000miles
- Roadside assistance coverage: 60 months/60,000miles
- Front center armrest: w/storage
- Front seats: bench
- Max seating capacity: 6
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: vinyl
- Split folding rear seat
- 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")
- Bedliner
- Bumpers: 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: 3,184kg (7,019lbs)
- 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: 1,536kg (3,387lbs)
- 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: analog
- Auto high-beam headlights
- Compass
- Delay-off headlights
- Exterior parking camera rear: HD Rear Vision Camera yes
- Front reading lights
- Fully automatic headlights
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- 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
- Tracker system: Stolen Vehicle Assistance
- Traction control
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!
