Prices starting at: $47,500
View photos, watch videos and get a quote on a new 2025 GMC Sierra 3500 HD in BOISE, ID.

- Body Exterior
- 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
- Powertrain
- 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
- Warranty
- 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
- Suspension/Handling
- Front wheel independent suspension
- Front anti-roll bar
- Power steering
- Front tires : 275/70SR18.0E
- Rear tires : 275/70SR18.0E
- Single rear wheels
- Wheel size : 18"
- Tires : all-terrain
- Specs and Dimensions
- 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 : 2,079kg (4,583lbs)
- Curb weight : 2,871kg (6,329lbs)
- GVWR : 4,967kg (10,950lbs)
- Towing capacity : 6,577kg (14,500lbs)
- Exterior length : 6,002mm (236.3")
- Exterior body width : 2,079mm (81.8")
- Exterior height : 2,056mm (80.9")
- 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")
- Entertainment Features
- AM/FM radio
- Speakers : 2
- Wireless phone connectivity
- 1st row LCD monitors : 1
- Primary LCD size : 7.0"
- Smart device integration
- Lighting, Visibility and Instrumentation
- 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 : warning
- Exterior parking camera rear
- Safety and Security
- Forward collision : 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
- Ignition disable
- Electronic stability
- Traction control
- Front pedestrian detection : prevention
- Seats and Trim
- Max seating capacity : 3
- Front seats : bench
- Front center armrest : w/storage
- Seat Upholstery : vinyl
- Off-Road Capability
- Ground clearance (min) : 285mm (11.2")
- Convenience Features
- 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
- Front beverage holders
- Overhead console
- Driver door bin
- Passenger door bin
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Learn More About Buying a 2025 GMC Sierra 3500 HD in BOISE
Visit Dennis Dillon GMC for a great deal on a new 2025 GMC Sierra 3500 HD. Our sales team is ready to show you all of the features that you will find in the GMC Sierra 3500 HD and take you for a test drive in the BOISE Area. At our GMC dealership you will find competitive prices, a stocked inventory of 2025 GMC Sierra 3500 HD cars and a helpful sales team. Stop by our car dealership today and take a 2025 GMC for a spin.
2025 GMC Sierra 3500 HD Denali Ultimate DRW
- MSRP$104,035
- Dennis Dillon Discount$7,282
- Dennis Dillon Price$96,753
- Offers$1,000
- Final Price$95,753
- Conditional Offers$500
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
View Details
2025 GMC Sierra 3500 HD Denali Ultimate DRW
- MSRP$104,035
- Dennis Dillon Discount$7,282
- Dennis Dillon Price$96,753
- Offers$1,000
- Final Price$95,753
- Conditional Offers$500
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
View Details
2025 GMC Sierra 3500 HD Denali Ultimate DRW
- MSRP$104,035
- Dennis Dillon Discount$7,282
- Dennis Dillon Price$96,753
- Offers$1,000
- Final Price$95,753
- Conditional Offers$500
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
View Details
2025 GMC Sierra 3500 HD Denali Ultimate DRW
- MSRP$104,035
- Dennis Dillon Discount$7,282
- Dennis Dillon Price$96,753
- Offers$1,000
- Final Price$95,753
- Conditional Offers$500
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
View Details
2024 GMC Sierra 3500 HD Pro
- MSRP$63,660
- Dennis Dillon Discount$7,661
- Dennis Dillon Price$55,999
- Offers$1,000
- Final Price$54,999
- Conditional Offers$500
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black, Cloth seat trim
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2014 GMC Sierra 3500 HD SLE
- Your Price$39,999
Engine: 6.6L DIESEL, 8 CYL, , PTI, V8, TURBO, DURAMAX, Transmission: Automatic, Mileage: 113,330 miles, Exterior Color: Exterior, Mahler White (02) (Brazil), Interior Color: DARK TITANIUM/LIGHT TITANIUM, LEATHER-APPOINTED FR
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2020 GMC Sierra 3500 HD Denali
- Your Price$53,999
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 99,446 miles, Exterior Color: White Frost Tricoat, Interior Color: Dark Walnut/Dark Ash Grey, Forge Perforated leathe
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2021 GMC Sierra 3500 HD AT4
- Your PricePlease Call
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 100,635 miles, Exterior Color: Brownstone Metallic, Interior Color: Jet Black with Kalahari accents, Perforated Front
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Interested in a different GMC? Click a link below and find the GMC that fits your lifestyle.
Vehicle prices below Manufacturer's Suggested Retail Price (MSRP) include factory rebates typically applicable to Customers in the western region and discounts for program qualifying financing. (Customers from most other regions may qualify for the same rebates.)
To receive the lowest listed price, Customers must qualify for additional Dealer and Manufacturer programs. Not all Customers will qualify.
Prices do not include taxes, license, title, or registration fees, or the $499.00 Dealer Doc fee.
Contact us for an explanation of pricing terms and conditions.
Prices are subject to inventory availability, Manufacturer program availability, and Dealer program applicability.
Inventory is limited and subject to prior sale.
Available offers and prices usually change after month-end.
We welcome all types of Trade Ins, whether they be vehicles or goods. Nothing that eats though please.
We frequently confirm all information is accurate, but errors occur, so please call to confirm pricing and program applicability. Dealer is not responsible for clerical errors.
**With approved credit. Terms may vary. Monthly payments are only estimates derived from the vehicle price with a 72 month term, 4.9% interest and 20% downpayment.
At Dennis Dillon we are so confident in our "Guaranteed Best Pricing" we will beat any price by $500 based on the following guidelines:
• Vehicles must be new and have the same MSRP.
• Vehicles must be the same Year, Make, Model, and have the same equipment.
• Customer must have a purchase agreement signed and dated by a sales manager from the competing dealer.
• Customer information and incentive eligibility must be the same as used in the competing offer.
• Deal must be finalized in the same calendar month as the date of the signed purchase agreement from the competing dealer.
• Demonstrators, service loaners, commercial and government fleet vehicles, limited production vehicles, special model vehicles (determined at the Dealership's sole discretion), and vehicles with over 200 miles do not qualify for this policy.
• Dennis Dillon must have the right to purchase the vehicle from the competing dealer.
• This offer applies to the new vehicle price after applicable incentives, and does not include accessories, trade-allowance, or any other item affecting the final sale price.
• This offer applies to the vehicle price only, and does not include accessories, protections, dealer doc fee, taxes, registration, or title fees.
*Best pricing is offered at the Dealership's sole discretion and is subject to change at any time without prior notice. The Dealership reserves the right to refuse to offer best pricing at any time, to any customer, for any vehicle. Please contact the Dealership if you have questions about our best pricing policy.