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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2025 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

2025 GMC
Sierra 2500 HD Truck

Starting at: $46,300

  • Manufacturer Offer

    For Well-Qualified Buyers When Financed w/ GM Financial

    * Read full offer details
    Applies to this new 2025 GMC Sierra 2500 HD

    * Disclaimer(s)

    • 3.9% APR for 48 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $22.53 for every $1000 you finance. Average example down payment is 11.7%. Not available with leases and some other offers. Must take new retail delivery by 09/02/2025. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 3.9% APR with $2,500 down payment provides for 48 monthly payments of $22.53 per $1000 financed for qualified buyers. 3.9% APR for a term of 36 months corresponds to a monthly cost of $29.48 per $1000 financed. 4.9% APR for a term of 60 months corresponds to a monthly cost of $18.83 per $1000 financed. 5.9% APR for a term of 72 months corresponds to a monthly cost of $16.53 per $1000 financed. 5.9% APR for a term of 84 months corresponds to a monthly cost of $14.56 per $1000 financed. The rates described are for estimation purposes only; you may not be able to finance at this rate.

      See Trims

  • Manufacturer Offer

    Bonus Cash

    * Read full offer details
    Applies to this new 2025 GMC Sierra 2500 HD

    * Disclaimer(s)

    • Not available with some other offers. Must take new retail delivery by 09/02/2025.

      See Trims

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Inventory

  • 2025 GMC Sierra 2500 HD SLT

    • MSRP:$82,915
    • Dealer Discount:$3,500
    • Coulter Price :$79,415
    • Offers:$1,000
    • Coulter Price:$78,415
    Engine:
    6.6L V-8 Diesel,
    Transmission:
    Automatic,
    Drive Line:
    4WD,
    Exterior Color:
    Volcanic Red Tintcoat,
    Interior Color:
    Jet Black, Perforated Leather-appointed front outb,
    Stock #:
    GSI50263,
    Mileage:
    5 miles,
    Vehicle Status:
    In Stock
    VIN:
    1GT4UNEY4SF281480
    More
    View Details
  • 2025 GMC Sierra 2500 HD SLT

    • MSRP:$81,170
    • Dealer Discount:$5,000
    • Coulter Price :$76,170
    • Offers:$1,000
    • Coulter Price:$75,170
    Engine:
    6.6L V-8 Diesel,
    Transmission:
    Automatic,
    Drive Line:
    4WD,
    Exterior Color:
    Volcanic Red Tintcoat,
    Interior Color:
    Jet Black, Perforated Leather-appointed front outb,
    Stock #:
    GSI50217,
    Mileage:
    5 miles,
    Vehicle Status:
    In Stock
    VIN:
    1GT4UNEY8SF243069
    More
    View Details
  • 2025 GMC Sierra 2500 HD SLT

    • MSRP:$83,115
    • Dealer Discount:$3,500
    • Coulter Price :$79,615
    • Offers:$1,000
    • Coulter Price:$78,615
    Engine:
    6.6L V-8 Diesel,
    Transmission:
    Automatic,
    Drive Line:
    4WD,
    Exterior Color:
    Volcanic Red Tintcoat,
    Interior Color:
    Jet Black, Perforated Leather-appointed front outb,
    Stock #:
    GSI50278,
    Mileage:
    5 miles,
    Vehicle Status:
    In Stock
    VIN:
    1GT4UNEY7SF282378
    More
    View Details
  • 2025 GMC Sierra 2500 HD SLT

    • MSRP:$82,215
    • Dealer Discount:$6,650
    • Coulter Price :$75,565
    • Offers:$1,000
    • Coulter Price:$74,565
    Engine:
    6.6L V-8 Diesel,
    Transmission:
    Automatic,
    Drive Line:
    4WD,
    Exterior Color:
    White Frost Tricoat,
    Interior Color:
    Jet Black, Perforated Leather-appointed front outb,
    Stock #:
    GSI50036,
    Mileage:
    5 miles,
    Vehicle Status:
    In Stock
    VIN:
    1GT4UNEY6SF151202
    More
    View Details
  • 2025 GMC Sierra 2500 HD SLT

    • MSRP:$78,685
    • Dealer Discount:$3,500
    • Coulter Price :$75,185
    • Offers:$1,000
    • Coulter Price:$74,185
    Engine:
    6.6L V-8 Diesel,
    Transmission:
    Automatic,
    Drive Line:
    4WD,
    Exterior Color:
    Titanium Rush Metallic,
    Interior Color:
    Jet Black, Perforated Leather-appointed front outb,
    Stock #:
    GSI50224,
    Mileage:
    5 miles,
    Vehicle Status:
    In Stock
    VIN:
    1GT4UNEY5SF252053
    More
    View Details
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Specifications

  • Rear cargo - tailgate
  • 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
  • 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
  • Standard fuel economy fuel type - gasoline
  • Hybrid traction battery type - none
  • 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 - 1,705kg (3,759lbs)
  • Curb weight - 2,814kg (6,203lbs)
  • 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
  • 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 2025 GMC Sierra 2500 HD Truck Pro Search New $46,300   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $48,200   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $48,400   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $49,100   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $50,000   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $50,200   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$50,400   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $51,000   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $51,200   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$52,500   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$52,700   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $52,800   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Pro 2025 GMC Sierra 2500 HD Truck Pro Search New $53,000   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$53,200   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$54,300   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$54,500   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$55,300   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$55,500   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$57,100   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLE
Search New
$57,300   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLT
Search New
$61,900   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLT
Search New
$62,200   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLT
Search New
$64,700   401-hp 6.6L 8-cyl  10-spd auto  No Data  
SLT
Search New
$65,000   401-hp 6.6L 8-cyl  10-spd auto  No Data  
AT4
Search New
$71,000   401-hp 6.6L 8-cyl  10-spd auto  No Data  
AT4
Search New
$71,200   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Denali
Search New
$73,900   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Denali
Search New
$74,100   401-hp 6.6L 8-cyl  10-spd auto  No Data  
AT4X
Search New
$83,200   401-hp 6.6L 8-cyl  10-spd auto  No Data  
Denali Ultimate
Search New
$93,300   470-hp 6.6L 8-cyl  10-spd auto  No Data  
Denali Ultimate
Search New
$93,600   470-hp 6.6L 8-cyl  10-spd auto  No Data  

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All prices are plus, tax, title, license, and market adjustment. New vehicles are installed with $1,991 dealer ads (KeyFetch, window tint, Xzilon, Clear Guard and nitrogen). Used vehicles are subject to $1,190 in dealer fee’s - vehicle preparation and vehicle anti-theft identification key fetch and dealer doc fee of $599 taxes and title fee’s. Coulter Cadillac Tempe has onsite finance experts that can find the best finance rates and terms, including credit unions.