2026 GMC Sierra 2500 HD Truck Digital Showroom

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2026 GMC Sierra 2500 HD Truck Overview

The standard features of the GMC Sierra 2500HD Pro include 6.6L V-8 401hp engine, 10-speed automatic transmission with overdrive, 4-wheel anti-lock brakes (ABS), Side seat mounted airbags, Curtain 1st row overhead airbag, Airbag occupancy sensor, Air conditioning, 17" steel wheels, Cruise control, ABS and driveline traction control, Electronic stability

Starting at: $47,000

Manufacturer Offer

No Monthly Payments for 130 Days for Well-Qualified Buyers When Financed w/ GM Financial
* Read full offer details
Applies to this new 2026 GMC Sierra 2500 HD
* Disclaimer(s)
- Deferred monthly payments for 130 days. Finance charges accrue from date of financing. Must finance with GM Financial. Down payment required at signing, if applicable. Offer not available in PA. Some customers may not qualify. Not available with lease and some other offers. 4.9% APR for 48 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $22.98 for every $1000 you finance. Average example down payment is 10.0%. Not available with leases and some other offers. Must take new retail delivery by 06/30/2026. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 4.9% APR with $2,500 down payment provides for 48 monthly payments of $22.98 per $1000 financed for qualified buyers. 4.9% APR for a term of 36 months corresponds to a monthly cost of $29.93 per $1000 financed. 6.9% APR for a term of 84 months corresponds to a monthly cost of $15.04 per $1000 financed. 6.9% APR for a term of 72 months corresponds to a monthly cost of $17 per $1000 financed. 5.9% APR for a term of 60 months corresponds to a monthly cost of $19.29 per $1000 financed. The rates described are for estimation purposes only; you may not be able to finance at this rate.
  
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Manufacturer Offer

Bonus Cash
* Read full offer details
Applies to this new 2026 GMC Sierra 2500 HD
* Disclaimer(s)
- Not available with some other offers. Must take new retail delivery by 06/30/2026.
  
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Inventory Specifications Trims

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Inventory

2026 GMC Sierra 2500 HD AT4
- MSRP:$89,710
- Dealer Discount:$4,000
- Final Price:$85,710
- Offers:$1,000
- Final Price:$84,710
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Onyx Black,

Interior Color:

Jet Black with Kalahari accents, Perforated Front,

Stock #:

45T571
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2026 GMC Sierra 2500 HD AT4
- MSRP:$90,010
- Dealer Discount:$2,300
- Final Price:$87,710
- Offers:$1,000
- Final Price:$86,710
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Onyx Black,

Interior Color:

Jet Black with Kalahari accents, Perforated Front,

Stock #:

45T582
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2026 GMC Sierra 2500 HD AT4
- MSRP:$92,500
- Final Price:$92,500
- Offers:$1,000
- Final Price:$91,500
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Onyx Black,

Interior Color:

Jet Black with Kalahari accents, Perforated Front,

Stock #:

45T583
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2026 GMC Sierra 2500 HD AT4X
- MSRP:$99,025
- Dealer Discount:$4,362
- Final Price:$94,663
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Onyx Black,

Interior Color:

Obsidian Rush, Full Grain Leather seat trim,

Stock #:

45T528
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2026 GMC Sierra 2500 HD Denali
- MSRP:$90,365
- Dealer Discount:$2,014
- Final Price:$88,351
- Offers:$2,000
- Final Price:$86,351
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Sterling Metallic,

Interior Color:

Jet Black, Forge Perforated Leather seat trim,

Stock #:

45T542
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Specifications

Rear cargo - tailgate
Power door mirrors
Heated door mirrors
Turn signal indicator mirrors
Bumpers - chrome
Rear step bumper
Trailer hitch
Trailer sway control
Hitch Class - IV

Engine liters - 6.6L
Compressor - Not Available
Cylinder configuration - V-8
Horsepower - 401hp @ 5,200RPM
Torque - 464 lb.-ft. @ 4,000RPM
Number of valves - 16
Variable valve control
Engine location - front
Hybrid electric powertrain type - none
Hybrid traction battery type - none
Electric motor horsepower - none
Hybrid system net power - none
Recommended fuel - Regular Unleaded
Transmission - 10 speed automatic
Mode select transmission
Manual-shift auto
Drive type - rear-wheel
Fuel tank capacity - 36.0gal.
Rear locking differential
Hybrid system combined power torque - none
Electric motor 1 torque - none
Standard fuel economy fuel type - gasoline

Basic warranty - 36 months/36,000miles
Powertrain warranty - 60 months/60,000miles
Corrosion perforation warranty - 72 months/100,000miles
Roadside assistance coverage - 60 months/60,000miles
Maintenance warranty - 12 months/ unlimited distance

Front wheel independent suspension
Front anti-roll bar
Power steering
Front tires - 245/75SR17.0E
Rear tires - 245/75SR17.0E
Single rear wheels
Wheel size - 17"

Engine displacement - 6.6 L
Engine torque - 464 lb.-ft. @ 4,000RPM
Engine bore x stroke - 103.3mm x 98.0mm (4.07" x 3.86")
Compression ratio - 10.80 to 1
Payload - 1,673kg (3,689lbs)
Curb weight - 2,843kg (6,267lbs)
GVWR - 4,536kg (10,000lbs)
Towing capacity - 6,577kg (14,500lbs)
Exterior length - 6,002mm (236.3")
Exterior body width - 2,076mm (81.8")
Exterior height - 2,030mm (79.9")
Wheelbase - 3,607mm (142.0")
Turning radius - 7.1m (23.5')
Front legroom - 1,131mm (44.5")
Front headroom - 1,095mm (43.1")
Front hiproom - 1,547mm (60.9")
Front shoulder room - 1,678mm (66.1")

AM/FM radio
Premium audio system - GMC Infotainment System
Speakers - 2
Turn-by-turn navigation directions - OnStar Turn-by-Turn Navigation
Wireless phone connectivity - Bluetooth
1st row LCD monitors - 1
Primary LCD size - 7.0"
Smart device integration - Apple CarPlay/Android Auto

Fully automatic headlights
Delay-off headlights
Auto high-beam headlights
Variably intermittent wipers
Front reading lights
Appearance - analog
Tachometer
Voltmeter
Oil pressure gauge
Compass
Outside temperature display
Low tire pressure warning
Trip computer
Lane departure - Lane Departure Warning warning
Exterior parking camera rear - HD Rear Vision Camera yes

Forward collision - Forward Collision Alert with Automatic Braking mitigation
4 wheel disc brakes
ABS brakes
Brake assist
Dual front impact airbags
Dual front side impact airbags
Overhead airbag
Occupant sensing airbag
Panic alarm
Perimeter/approach lights
Tracker system - Stolen Vehicle Assistance
Ignition disable
Electronic stability
Traction control
Front pedestrian detection - prevention

Max seating capacity - 3
Front seats - bench
Front center armrest - w/storage
Seat Upholstery - vinyl

Ground clearance (min) - 259mm (10.2")

Air conditioning
Speed control
Power windows
1-touch down
1-touch up
Remote keyless entry
Proximity key - push button start only
Illuminated entry
Tilt steering wheel
Passenger vanity mirror
Emergency communication system - OnStar
Front beverage holders
Overhead console
Driver door bin
Passenger door bin

Trims

	MSRP	Engine	Transmission	City/Hwy mpg
Pro Search New	$47,000	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$48,900	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$49,100	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$49,800	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$50,700	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$50,900	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$51,700	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$51,900	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$53,500	401-hp 6.6L 8-cyl	10-spd auto	No Data
Pro Search New	$53,700	401-hp 6.6L 8-cyl	10-spd auto	No Data
SLE Search New	$54,000	401-hp 6.6L 8-cyl	10-spd auto	No Data
SLE Search New	$56,100	401-hp 6.6L 8-cyl	10-spd auto	No Data
SLE Search New	$56,300	401-hp 6.6L 8-cyl	10-spd auto	No Data
SLE Search New	$57,900	401-hp 6.6L 8-cyl	10-spd auto	No Data
SLE Search New	$58,100	401-hp 6.6L 8-cyl	10-spd auto	No Data
SLT Search New	$65,200	401-hp 6.6L 8-cyl	10-spd auto	No Data
SLT Search New	$65,500	401-hp 6.6L 8-cyl	10-spd auto	No Data
AT4 Search New	$72,200	401-hp 6.6L 8-cyl	10-spd auto	No Data
AT4 Search New	$72,400	401-hp 6.6L 8-cyl	10-spd auto	No Data
Denali Search New	$75,200	401-hp 6.6L 8-cyl	10-spd auto	No Data
Denali Search New	$75,400	401-hp 6.6L 8-cyl	10-spd auto	No Data
AT4X Search New	$85,200	401-hp 6.6L 8-cyl	10-spd auto	No Data
Denali Ultimate Search New	$94,200	470-hp 6.6L 8-cyl	10-spd auto	No Data
Denali Ultimate Search New	$94,500	470-hp 6.6L 8-cyl	10-spd auto	No Data

Your privacy is important to us.

Kunes GMC of Beloit takes your privacy seriously and does not rent or sell your personal information to third parties without your consent. Read our privacy policy.

Vehicle Information & Availability

Vehicle listings on this website are provided for general informational purposes. While every effort has been made to ensure accurate display of vehicle information, including equipment, accessories, colors, and specifications, data is sourced from multiple providers and may not always reflect the exact configuration of a specific vehicle. Vehicle photos may be representative examples of the model and may not depict the actual unit available for sale. Accessories and colors may vary. All inventory is subject to prior sale.

Vehicles may be transferred between Kunes Auto Group locations at customer request. A transfer fee of $300 will be added to the purchase transaction to cover transportation costs when a vehicle is moved from its listed location. To avoid this fee, customers may take delivery of the vehicle at the dealership where it is currently listed for sale.

Fuel Economy (EPA) Ratings

Any fuel economy figures shown are based on the model year EPA mileage ratings and are provided for comparison purposes only. Your actual fuel economy will vary depending on how you drive and maintain your vehicle, driving conditions, vehicle load, climate, and other factors. For hybrid and plug-in hybrid vehicles, fuel economy will also vary based on battery pack age and condition. For more information about EPA fuel economy ratings, visit https://www.fueleconomy.gov.

General Disclaimer

All information on this website is provided on an “as is” basis without warranty of any kind, express or implied. Kunes Auto Group and its third-party data providers are not responsible for errors or omissions in vehicle listings, pricing, or incentive information. Nothing on this website constitutes a binding offer or contract. All sales are subject to a written purchase agreement signed by both the customer and an authorized Kunes Auto Group representative. This disclaimer applies to all Kunes Auto Group dealership locations in Illinois, Wisconsin, Iowa, and Minnesota and is subject to change without notice.

If you have questions about any information on this website or would like clarification on fees, financing, or vehicle details, please contact your local Kunes Auto Group dealership. We are happy to walk you through all terms and charges before you make any decisions. Disclaimer Updated - May 2026

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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD Truck Overview