2025 GMC Sierra 3500HD Diesel Denali Ultimate Specs & Features

Starting MSRP

$96,700

Overview

Diesel

Drive Type	four wheel drive
Total Seating	5
Bed length	82.2 in.
Payload Capacity	3,729 lbs.
Towing Capacity	20,000 lbs.
Curb Weight	8,333 lbs.
Basic Warranty	3 yr./ 36,000 mi.
Country of final assembly	United States

Fuel & MPG

Fuel type	Diesel fuel
Range in miles (city/hwy)	0/0 mi.
Fuel tank capacity	36.0 gal.

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Engine

Base engine size	6.6 L
Cylinders	V8
Base engine type	Diesel

Horsepower	470 hp @ 2,800 rpm
Torque	975 lb-ft @ 1,600 rpm
Valves	32
Cam type	Overhead valves (OHV)
Direct injection (diesel)	Standard

Towing & Hauling

Max Towing Capacity	20,000 lbs.
Max Payload Capacity	3,729 lbs.

Drivetrain

Transmission	10-speed shiftable automatic
Drive type	Four wheel drive
On demand 4WD	Standard

Electronic hi-lo gear selection	Standard
Automatic locking hubs	Standard
Rear locking differential	Standard
Descent control	Standard

Incentives

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Suspension

Front independent suspension	Standard
Stabilizer bar stabilizer bar	Standard

Dimensions

Length	250.8 in.
Overall width without mirrors	81.9 in.
Height	81.2 in.

Wheelbase	159.0 in.
Bed length	82.2 in.
Turning circle	52.7 ft.
Ground clearance	11.2 in.
Curb weight	8,333 lbs.
Maximum towing capacity	20,000 lbs.
Maximum payload	3,729 lbs.
Gross weight	12,100 lbs.
Country of final assembly	United States

Colors

Exterior Colors	Sterling Metallic White Frost Tricoat Titanium Rush Metallic Downpour Metallic Summit White Onyx Black
Interior Colors	Dark Walnut/Slate, cloth

Front Seat Dimensions

Front head room	43.0 in.
Front leg room	44.5 in.
Front shoulder room	66.0 in.

Front hip room	61.2 in.
Premium leather	Standard
Bucket front seats	Standard
12-way power driver seat	Standard
Height adjustable driver seat	Standard
Driver seat with power adjustable lumbar support	Standard
2 memorized driver seat settings	Standard
12-way power passenger seat	Standard
Height adjustable passenger seat	Standard
Passenger seat with power adjustable lumbar support	Standard
Multi-level heated driver seat	Standard
Multi-level heated passenger seat	Standard
Ventilated driver seat	Standard
Ventilated passenger seat	Standard
Massaging	Standard

Rear Seat Dimensions

Rear head room	40.1 in.
Rear leg room	43.4 in.
Rear shoulder room	65.3 in.

Rear hip room	60.2 in.
Split-folding rear seatback	Standard
Folding with storage center armrest	Standard
Multi-level heated	Standard

Safety

Blind spot and lane departure warnings accident avoidance system	Standard
Rear cross traffic alert	Standard
Pre-collision safety system	Standard

Post-collision safety system	Standard
Dual front side-mounted airbags	Standard
Front and rear head airbags	Standard
Passenger airbag occupant sensing deactivation	Standard
Stability control	Standard
Traction control	Standard
Child seat anchors	Standard
Rear door child safety locks	Standard
4-wheel ABS	Standard
Front and rear ventilated disc brakes	Standard
Tire pressure monitoring	Standard
Dusk sensing headlamps	Standard
Auto delay off headlamps	Standard
LED headlamp	Standard
Daytime running lights	Standard
Front fog/driving lights	Standard
Turn signal mirrors	Standard
2 front headrests	Standard
Front height adjustable headrests	Standard
2 rear headrests	Standard
Rear height adjustable headrests	Standard
Rear center 3-point belt	Standard
Remote anti-theft alarm system	Standard
Engine immobilizer	Standard

Build Your 2025 Sierra 2500HD

At a Glance:

2 Trims
$46,300starting MSRP

Build & Price GMC.com

*The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.

In-Car Entertainment

13.4" infotainment display size	Standard
AM/FM stereo	Standard
Bose premium brand speakers	Standard

12 total speakers	Standard
1 subwoofer(s)	Standard
Wireless Android Auto/Apple CarPlay	Standard
USB connection	Standard
Auxiliary audio input and USB with external media control	Standard
Satellite radio satellite radio	Standard
Speed sensitive volume control	Standard

Power Feature

4 one-touch power windows	Standard
Hands-free entry	Standard
Reverse tilt dual mirrors provides curb view when vehicle in reverse	Standard

Heated mirrors	Standard

Comfort & Convenience

Keyless ignition	Standard
Tilt and telescopic steering wheel	Standard
Audio and cruise controls on steering wheel	Standard

Power steering	Standard
Front, side, and rear view camera	Standard
Front and rear parking sensors	Standard
Wireless charging	Standard
Adaptive cruise control	Standard
Universal remote transmitter (for garage door, security system, etc.)	Standard
Front and rear cupholders	Standard
Front and rear door pockets	Standard
Front seatback storage	Standard
Leather steering wheel	Standard
Heated steering wheel	Standard
Dual zone front climate control	Standard
Rear ventilation ducts	Standard
Sun sensor	Standard
Dual illuminating vanity mirrors	Standard
Electrochromatic inside rearview mirror	Standard
Turn signal in mirrors	Standard

Instrumentation

Trip computer	Standard
Compass	Standard
External temperature display	Standard

Tachometer	Standard
Clock	Standard

Tires & Wheels

Painted alloy wheels	Standard
20 in. wheels	Standard
All terrain tires	Standard

LT275/65R20 tires	Standard
Fullsize non-matching spare tire	Standard
Underbody mounted spare tire	Standard

Telematics

Emergency Service	Standard
Airbag Deployment Notification	Standard
Stolen Vehicle Tracking/Assistance	Standard

Hands-Free Calling	Standard
Roadside Assistance	Standard
Concierge Service	Standard
Destination guidance (also Turn-by-Turn Navigation)	Standard
Destination Download	Standard

Warranty

Basic	3 yr./ 36,000 mi.
Drivetrain	5 yr./ 60,000 mi.
Rust	6 yr./ 100,000 mi.

Roadside assistance	5 yr./ 60,000 mi.
Free maintenance	1 yr./ unlimited mi.

Mechanical Options

Duramax 6.6L Turbo-Diesel V8 Engine	+$9,990
Heavy Duty Front Spring/Camper Package	+$45
Dual Alternators	+$380

High Idle Switch	+$200
Gooseneck Hitch Package	+$325
Trailering Wiring Provisions	+$35
Gooseneck/5th Wheel Prep Package	+$545

Packages

Denali Illumination Package	+$950
Cargo Convenience Package	+$595
Snow Plow Prep/Camper Package	+$530

GMC Protection Package	+$435

Interior Options

Console-Mounted Safe	+$325
Universal Vehicle Module	+$295
Rear Under Seat Storage	+$250

3 Years SiriusXM	Standard
All-Weather Floor Liner	+$250
Upfitter Switch Kit	+$150
Sport Pedal Cover Kit	+$195
Premium Front Floor Liners	+$130
Deleted 3 Years of OnStar (Fleet)	Standard

Exterior Options

Black Front and Rear Molded Splash Guards	+$225
Auxiliary Trailer Camera	+$650
Tri-Fold Soft Tonneau Cover	+$750

Front License Plate Kit	+$0
Cargo Tie-Down Rings	+$150
Hard-folding Truck Bed Cover by RealTruck Advantage	+$1,495
20" High Gloss Black Aluminum Wheels w/Machined Accents	+$2,995
22" High Gloss Black Aluminum Wheels w/Machined Accents	+$3,450
Body Color Wheel Arch Moldings	+$865
20" Machined Aluminum Bolt Pattern Wheels w/High Gloss Black Accents	+$3,350
Red Illuminated Front GMC Emblem	+$450
20" High Gloss Black Painted Wheels	+$2,950
Wheel Locks	+$125
GMC MultiPro Tailgate Step Lights	+$195

2025 GMC Sierra 3500HD Diesel Denali Ultimate - Specs & Features