2026 GMC Sierra 2500 HD Truck Digital Showroom

The online model showroom at Coulter Motor Company in Tempe, AZ, makes it easy for drivers to explore our latest Buick and GMC vehicles from the comfort of home. With detailed information on fuel economy, available trim levels, and key features, our showroom allows you to compare models and find the one that best fits your lifestyle. Whether you're looking for a spacious SUV or a tough truck, you can get an in-depth look at each model's specifications and options to make an informed choice.

In addition to specs and features, our online showroom provides insights into each vehicle's unique design and performance capabilities. From advanced safety technology to luxury touches, you'll find everything you need to know before visiting our dealership in person. Coulter Motor Company is dedicated to offering a seamless, convenient shopping experience, helping you make the right choice with ease and confidence.

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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 Until Next Year 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 until 2027. 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. APR for for well-qualified buyers when financed w/GM Financial. Monthly payment is for every $1000 you finance. Average example down payment is . Not available with leases and some other offers. Must take new retail delivery by 11/02/2026. 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

Purchase Allowance
* Read full offer details
Applies to this new 2026 GMC Sierra 2500 HD
* Disclaimer(s)
- Not available with special financing, lease and some other offers. Must take new retail delivery by 11/02/2026.
  
  See Trims

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Inventory Specifications Trims

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Inventory

2026 GMC Sierra 2500 HD SLE
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Summit White,

Interior Color:

Jet Black, Cloth seat trim,

Stock #:

GSI60520,

Mileage:

5 miles,

Vehicle Status:

In Stock
VIN:
1GT3UMEY5TF384883
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2026 GMC Sierra 2500 HD AT4
Engine:

6.6L V-8,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Volcanic Red Tintcoat,

Interior Color:

Jet Black with Kalahari accents, Perforated Front,

Stock #:

GSI60271,

Mileage:

5 miles,

Vehicle Status:

In Stock
VIN:
1GT4UPE77TF245500
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2026 GMC Sierra 2500 HD SLE
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Summit White,

Interior Color:

Jet Black, Cloth seat trim,

Stock #:

GSI60550,

Mileage:

20 miles,

Vehicle Status:

In Stock
VIN:
1GT4UMEY4TF252430
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2026 GMC Sierra 2500 HD SLT
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Onyx Black,

Interior Color:

Jet Black, Perforated Leather-appointed front outb,

Stock #:

GSI60329,

Mileage:

5 miles,

Vehicle Status:

In Stock
VIN:
1GT4UNEY4TF273526
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2026 GMC Sierra 2500 HD SLT
Engine:

6.6L V-8 Diesel,

Transmission:

Automatic,

Drive Line:

4WD,

Exterior Color:

Onyx Black,

Interior Color:

Jet Black, Perforated Leather-appointed front outb,

Stock #:

GSI60355,

Mileage:

5 miles,

Vehicle Status:

In Stock
VIN:
1GT4UNEY3TF288096
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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 gasoline
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/7,500miles

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

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Coulter Buick GMC Tempe takes your privacy seriously and does not rent or sell your personal information to third parties without your consent. Read our privacy policy.

All prices do not include tax, title, license, or any applicable market adjustment. New vehicle pricing includes a $599 dealer documentation fee. Used vehicle pricing does not include the $599 dealer documentation fee. New vehicles are equipped with $2,289.95 in dealer protections (paint protection, door handle and edge guards, tint, etch, and KeyFetch). Used vehicles are subject to $2,185 in dealer protections (vehicle preparation, Coulter Value Pack, and KeyFetch). Coulter Buick GMC Tempe has on-site finance experts available to assist in securing competitive finance rates and terms, including options through credit unions.

BUICK GMC MODEL SHOWROOM in Tempe, AZ

2026 GMC Sierra 2500 HD Truck Overview

2026 GMC
Sierra 2500 HD Truck

Manufacturer Offer

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

* Disclaimer(s)

Manufacturer Offer

Purchase Allowance

* Disclaimer(s)