Available tow up to
36,000 LBS.*
Available horsepower
470
Available torque
975 LB.-FT.
Sierra HD trucks deliver innovative features that help you accomplish even the most ambitious goals.
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The available six-function tailgate helps improve loading, unloading and accessing the cargo box.
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See the area around your truck and compatible trailer from the inside.
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Available best-in-class
* 16-way power front seats with massaging feature.
SIERRA HD COLORS
EXPLORE SIERRA HD TRIMS
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PRO
Starting at: $46,300
- 6.6L V8 gas engine with Allison® 10-speed automatic transmission
- Trailering Package, Trailering Mirrors and Trailer Brake Controller
- Best-in-class HD cargo box volume*
- Wireless Apple CarPlay®* and wireless Android Auto™* compatibility
TRIM DETAILS SLE
Starting at: $53,200
- 13.4" diagonal center touchscreen and 12.3" diagonal digital Driver Information Center
- Traction Select System with Tow/Haul mode*
- 17" machined aluminum wheels
TRIM DETAILS SLT
Starting at: $64,700
- 10-way power driver and front outboard passenger heated seats with lumbar
- Heated steering wheel
- ProGrade Trailering System* with In-Vehicle Trailering App*
- MultiPro Tailgate
TRIM DETAILS -
AT4
Starting at: $71,000
- Exclusive Jet Black interior with Kalahari accents, and heated and ventilated perforated front leather seating surfaces
- Exclusive 20" gloss-black aluminum wheels with available BFGoodrich® off-road tires
- Off-Road Suspension Package with twin-tube Rancho shocks and skid plates
- Up to 14 available camera views* with HD Surround Vision*
TRIM DETAILS AT4X
Starting at: $83,200
- Factory-installed 1.5" suspension lift, Multimatic® DSSV dampers, rear electronic-locking differential, larger steel transfer case skid plate and front aluminum skid plate
- 35" Goodyear® Territory MT tires
- 16-way heated and ventilated power front seats with massage feature
- Obsidian Rush interior featuring full-grain leather seating with technical-grain leather accents and authentic Vanta ash wood
TRIM DETAILS -
DENALI
Starting at: $73,900
- 20" Ultra-Bright machined wheels with bright chrome inserts*
- Denali-exclusive authentic open-pore wood, patterned aluminum trim and forge perforated leather seating surfaces
- 12-way heated and ventilated power front seats
TRIM DETAILS DENALI ULTIMATE
Starting at: $93,300
- Duramax 6.6L Turbo-Diesel V8 engine with Allison 10-speed automatic transmission
- Signature Vader Chrome grille and exclusive 20" Ultra-Bright machined aluminum wheels with gloss-black inserts*
- Exclusive Alpine Umber interior featuring full-grain leather seating, authentic open-pore Paldao wood and 16-way power front seats with massage feature
- 12-Speaker Bose* Premium Series with Centerpoint* surround sound
TRIM DETAILS
CAPABILITY
VENTURE OUT WITH POWER



DISTINCTIVE WHEELS
- AT4X 18" machined aluminum wheels with High Gloss black accents
- Denali 20" Ultra-bright machined wheels with bright chrome inserts (shown)
- Denali Ultimate 20" Ultra-bright machined aluminum wheels with gloss black inserts
DENALI GRILLE
Stand out with the distinct GMC chrome grille.
DENALI ULTIMATE GRILLE
The Vader chrome grille makes a daring impression.
LED PROJECTOR HEADLAMPS AND LIGHTING
Animated light sequences help enhance Sierra Heavy Duty’s impressive exterior design.
INTERIOR
GET INSIDE A PREMIUM EXPERIENCE
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A COMFORTABLE RIDE
Sierra HD SLT features front heated and ventilated bucket seats with perforated leather appointments and available 10-way power-adjustable lumbar.
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UNCOMPROSING AMENTITIES
AT4’s Jet Black interior with Kalahari accents features heated and ventilated front seats with leather seating surfaces, and a wrapped heated steering wheel.
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SUPERB MATERIALS
Sierra HD Denali Ultimate’s Alpine Umber interior features full-grain leather seating, plaited contrast stitching, and embossed and laser-etched topographical map patterns of Mt. Denali’s summit.
A SPACIOUS CABIN
The Sierra Heavy Duty truck features best-in-class Crew Cab front head and leg room.

MASSAGING SEATS
Experience serious comfort with the available 16-way power front seats with massaging feature — the best in its class.
TECHNOLOGY
STAY CONNECTED
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Projects important information like speed and alerts onto your windshield.
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Up to 14 available camera views,
* including the available industry-first transparent trailer view,* help you see around your truck and compatible trailer. -
The 13.4" diagonal center touchscreen keeps you connected to your favorite apps. The available 12.3" diagonal driver information center displays vehicle info right behind your wheel.
SAFETY
GO WITH CONFIDENCE
Every GMC Sierra HD truck includes active safety and driver assistance technologies that help while driving and trailering.
Every GMC Sierra HD truck includes active safety and driver assistance technologies that help while driving and trailering.
Sierra HD Pro Safety includes:
SPEC HIGHLIGHTS
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CREW CAB
SEATING CAPACITY
Up to 6
FRONT HEADROOM
43.03"
FRONT LEGROOM
44.53"
VEHICLE WIDTH
81.85" single rear wheel
96.62" dual rear wheel
BED LENGTH
Standard bed: 82.20"
2500 long bed: 98.27"
3500 long bed: 98.22"
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DOUBLE CAB
SEATING CAPACITY
Up to 6
FRONT HEADROOM
43.03"
FRONT LEGROOM
44.53"
VEHICLE WIDTH
81.85" single rear wheel
96.62" dual rear wheel
BED LENGTH
Standard bed: 82.25" (not available for 3500)
Long bed: 98.27"
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REGULAR CAB
SEATING CAPACITY
3
FRONT HEADROOM
43.11"
FRONT LEGROOM
44.53"
VEHICLE WIDTH
81.85" single rear wheel
96.62" dual rear wheel
BED LENGTH
Long bed: 98.27"
CURRENT OFFER
2027
GMC SIERRA HD DENALI
5.9% APR FOR 84 Months
for well-qualified buyers.*
That’s $4,080 Average Finance Savings.*
Plus $1,000 Purchase Allowance.*