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GMC Sierra 2500HD Diesel

GMC Sierra 2500HD Diesel

Q: How much can this truck tow?

The maximum towing capacity is 20,000 pounds , making it suitable for large trailers, RVs, and work equipment.

Q: What type of transmission does it have?

It comes with a 10-speed shiftable automatic transmission that helps deliver smooth acceleration and efficient power distribution.

Q: Is the truck four-wheel drive?

Yes, it features a four-wheel-drive system with descent control and a rear limited-slip differential for better traction in challenging conditions.

$93,800
Brand: GMC
Category: Car's
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Available Official

Fuel Type Diesel
Engine Power 470 hp
Seat 5 seats
Top Speed 161 km/h
Transmission automatic

Full Specifications

Overview

Models Car models are the different versions or designs of cars made by a manufacturer, each with unique features, styles, and configurations.	Ultimate Denali
Year typically refers to the model year of a vehicle, which indicates its design and production cycle rather than the actual manufacturing date.	2026
Drive Type A car's drive type refers to which wheels receive power from the engine. For example, front-wheel drive (FWD) powers the front wheels, rear-wheel drive (RWD) powers the rear, and all-wheel drive (AWD) or four-wheel drive (4WD) power all four wheels.	four wheel drive
Total Seating Car total seating refers to the maximum number of passengers a car can accommodate, including the driver.	5
Bed length	82.2 in.
Curb Weight Car curb weight is the weight of a vehicle with all standard equipment, fluids, and a full tank of fuel, but without passengers or cargo.	8,233 lbs.
Basic Warranty A Basic Warranty is a manufacturer’s promise to repair or replace parts of a product if they prove defective within a specified period.	3 yr./ 36,000 mi.
Towing Capacity	20,000 lbs.
Payload Capacity	3,096 lbs.
Dealerships Car dealerships are businesses that sell new or used vehicles directly to consumers, often providing financing, trade-ins, and maintenance services.	Tampa, FL 33614, United States

Fuel & MPG / Battery & Range

Fuel type Fuel type refers to the kind of energy source used to power an engine or appliance, such as gasoline, diesel, electricity, or alternative fuels.	Diesel fuel
Range in miles (city/hwy) Car range refers to the distance a vehicle can travel on a full tank of fuel (or a full battery charge) and is usually measured separately for city driving—which often gives a lower range due to stop-and-go traffic—and highway driving, where steady speeds generally result in a higher range.	0/0 mi.
Fuel tank capacity A car's fuel tank capacity is the maximum amount of fuel it can hold, usually measured in liters or gallons.	36.0 gal.

Engine

Base engine size The car’s base engine size usually refers to its engine displacement, which is the total volume of all the cylinders (measured in liters or cubic centimeters).	6.6 L
Cylinders Car cylinders are the chambers in an engine where the combustion of fuel occurs, driving pistons to create mechanical power.	V8
Base engine type A car’s base engine type refers to its fundamental design—typically the configuration (like inline, V-type, or boxer) and the fuel it uses (gasoline, diesel, etc.).	Diesel
Horsepower Car horsepower is a unit of power that measures how much work an engine can perform, with one horsepower roughly equal to 746 watts.	470 hp @ 2,800 rpm
Torque Car torque is a measure of the engine's twisting force, indicating its ability to accelerate the vehicle and overcome resistance.	975 lb-ft @ 1,600 rpm
Valves Car valves are engine components that control the intake of air and fuel and the exhaust of combustion gases.	32
Cam type generally refers to the configuration of an engine’s camshaft(s). For example, engines can have a single overhead cam (SOHC) or dual overhead cam (DOHC) layout, each affecting valve timing and engine performance differently.	Overhead valves (OHV)
Direct injection Direct injection is a fuel system that injects fuel directly into the engine’s combustion chamber, which improves efficiency, power, and fuel economy.	Standard

Towing & Hauling

Max Towing Capacity	20,000 lbs.
Max Payload Capacity	3,096 lbs.

Drivetrain

Transmission A car transmission is the system that transfers power from the engine to the wheels, using different gear ratios to control speed and torque.	10-speed shiftable automatic
Drive Type A car's drive type refers to which wheels receive power from the engine. For example, front-wheel drive (FWD) powers the front wheels, rear-wheel drive (RWD) powers the rear, and all-wheel drive (AWD) or four-wheel drive (4WD) power all four wheels.	Four wheel drive
Descent control	Standard
Rear limited slip differential	Standard

Suspension

Four-wheel independent suspension	Standard
Front and rear stabilizer bar	Standard

Dimensions

Length	250.8 in.
Overall width with mirrors	81.9 in.
Height	Standard
Wheelbase A car's wheelbase is the distance between the centers of its front and rear wheels.	159.0 in.
Maximum payload	3,096 lbs.
Turning circle The car turning circle is the smallest circular path a vehicle can complete, reflecting its maneuverability.	52.7 ft.
Ground clearance he distance from the lowest part of the car to the ground. This measurement is important because it determines how well a car can handle rough or uneven terrain.	10.3 in.
Curb Weight Car curb weight is the weight of a vehicle with all standard equipment, fluids, and a full tank of fuel, but without passengers or cargo.	8,233 lbs.
Gross weight Car gross weight is the total weight of the vehicle including passengers, cargo, fuel, and all additional equipment.	11,350 lbs.
Country of final assembly A car’s country of final assembly is the nation where the vehicle is put together into its final form, regardless of where its parts were produced.	United States

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.
Bucket front seats	Standard
8-way power driver seat	Standard
Driver seat with power adjustable lumbar support	Standard
2 memorized driver seat settings	Standard
6-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

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.
Folding center armrest	Standard
Split-folding rear seatback	Standard

In-Car Entertainment

Display size	13.4"
Total speakers	12
AM/FM stereo	Standard
Android Auto/Apple CarPlay	Standard
USB connection	Standard
USB with external media control	Standard
Satellite radio satellite radio	Standard

Power Feature

4 one-touch power windows	Standard
1st row power glass moonroof	Standard
Hands-free entry	Standard
Heated mirrors	Standard

Instrumentation

Trip computer	Standard
Compass	Standard
Tachometer	Standard
External temperature display	Standard
Clock	Standard

Tires & Wheels

Tires Size	LT275/65R20
Wheels Size	20
Painted steel wheels	Standard
Fullsize matching spare tire	Standard
Temporary spare tire	Standard
Inside mounted spare tire	Standard
Underbody mounted spare tire	Standard

Telematics

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

Warranty

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

Disclaimer

We do not guarantee that the information of this page is 100% accurate and up to date. Learn more...

Our Rating

The overall rating is based on review by our experts

4.4

Design 4 / 10
Engine 5 / 10
Exterior Equipment 4 / 10
GPS 4 / 10
Performance 4 / 10
Price 5 / 10
Technology 5 / 10

PROS

With up to 20,000 lbs towing capacity and 975 lb-ft torque, it’s ideal for trailers, boats, and heavy equipment.

CONS

Its 250.8-inch length and 52.7-ft turning circle may make city parking and tight spaces challenging.

The GMC Sierra 2500HD Diesel Denali Ultimate heavy-duty performance with this 2026 diesel-powered 4WD pickup, featuring a massive 6.6L V8 engine delivering 470 hp and 975 lb-ft of torque paired with a smooth 10-speed automatic transmission. Built for serious work and capability, it offers an impressive 20,000-lb towing capacity and 3,096-lb payload, while maintaining stability with four-wheel independent suspension, descent control, and a rear limited-slip differential.

Your question is: GMC Sierra 2500HD Diesel Denali Ultimate?

Which question will you have about this car? Let’s justify these. There, we are including the major questions and answers about this car. So, let’s start now.

How much can this truck tow?

The maximum towing capacity is 20,000 pounds, making it suitable for large trailers, RVs, and work equipment.

What type of transmission does it have?

It comes with a 10-speed shiftable automatic transmission that helps deliver smooth acceleration and efficient power distribution.

Is the truck four-wheel drive?

Yes, it features a four-wheel-drive system with descent control and a rear limited-slip differential for better traction in challenging conditions.

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