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2025 GMC Sierra 3500 HD

6 trims · 84 configurations · Truck (Crew Cab), Truck (Regular Cab), Truck (Double Cab)

Starting MSRP

$45,600 – $100,800

Key specifications

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Manufacturer specs and trim data below are still available for research. Check back for dealer inventory, or browse other GMC models.

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Pricing

How much should you pay for the GMC Sierra 3500 HD? Select a trim to update purchase and lease estimates.

MSRP by trim

Select a trim to update the payment estimates. MSRP is for each trim's base configuration and excludes destination, taxes, and options.

Purchase information

Based on Pro

Total price (Pro MSRP)

$45,600

Typical monthly

$903/mo

Avg. APR

7.00%

60-month loan estimate for good credit (rates as of 2026-07-11). Not a credit offer; actual APR varies by lender, credit, and dealer.

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Compare 2025 GMC Sierra 3500 HD trims

  • Pro

    28 configurations

    MSRP
    $45,600 – $55,600
    Fuel economy (city/hwy)
    Horsepower
    401 hp
    Torque
    464 lb-ft
    Engine
    6.6L V8 gas
    Seating
    3
    Drivetrain
    RWD
    Cargo (cu ft)
    Max towing
    14,500 lbs
  • SLE

    28 configurations

    MSRP
    $50,400 – $59,800
    Fuel economy (city/hwy)
    Horsepower
    401 hp
    Torque
    464 lb-ft
    Engine
    6.6L V8 gas
    Seating
    3
    Drivetrain
    RWD
    Cargo (cu ft)
    Max towing
    14,500 lbs
  • SLT

    12 configurations

    MSRP
    $61,700 – $67,500
    Fuel economy (city/hwy)
    Horsepower
    401 hp
    Torque
    464 lb-ft
    Engine
    6.6L V8 gas
    Seating
    6
    Drivetrain
    RWD
    Cargo (cu ft)
    Max towing
    20,000 lbs
  • AT4

    4 configurations

    MSRP
    $70,300 – $72,400
    Fuel economy (city/hwy)
    Horsepower
    401 hp
    Torque
    464 lb-ft
    Engine
    6.6L V8 gas
    Seating
    5
    Drivetrain
    4WD
    Cargo (cu ft)
    Max towing
    20,000 lbs
  • Denali

    6 configurations

    MSRP
    $74,400 – $78,000
    Fuel economy (city/hwy)
    Horsepower
    401 hp
    Torque
    464 lb-ft
    Engine
    6.6L V8 gas
    Seating
    5
    Drivetrain
    4WD
    Cargo (cu ft)
    Max towing
    20,000 lbs
  • Denali Ultimate

    6 configurations

    MSRP
    $95,300 – $100,800
    Fuel economy (city/hwy)
    Horsepower
    470 hp
    Torque
    975 lb-ft
    Engine
    6.6L V8 diesel
    Seating
    5
    Drivetrain
    4WD
    Cargo (cu ft)
    Max towing
    20,000 lbs

Specifications shown for each trim’s base configuration; drivetrain, cab, and box options vary within a trim, and MSRP shows the full range. MSRP excludes destination fees, taxes, and dealer-installed options.

Full specifications

Shown for each trim's base configuration. Drivetrain, cab, and box options within a trim can change dimensions, capacities, and fuel economy.

Engine & drivetrain

Engine type
Progas
SLEgas
SLTgas
AT4gas
Denaligas
Denali Ultimatediesel
Fuel type
Proregular unleaded
SLEregular unleaded
SLTregular unleaded
AT4regular unleaded
Denaliregular unleaded
Denali Ultimatediesel fuel
Cylinders
ProV8
SLEV8
SLTV8
AT4V8
DenaliV8
Denali UltimateV8
Displacement
Pro6.6 L
SLE6.6 L
SLT6.6 L
AT46.6 L
Denali6.6 L
Denali Ultimate6.6 L
Horsepower
Pro401 hp
SLE401 hp
SLT401 hp
AT4401 hp
Denali401 hp
Denali Ultimate470 hp
Torque
Pro464 lb-ft
SLE464 lb-ft
SLT464 lb-ft
AT4464 lb-ft
Denali464 lb-ft
Denali Ultimate975 lb-ft
Transmission
Pro10-speed shiftable automatic
SLE10-speed shiftable automatic
SLT10-speed shiftable automatic
AT410-speed shiftable automatic
Denali10-speed shiftable automatic
Denali Ultimate10-speed shiftable automatic
Drivetrain
Prorear wheel drive
SLErear wheel drive
SLTrear wheel drive
AT4four wheel drive
Denalifour wheel drive
Denali Ultimatefour wheel drive

Dimensions

Body type
ProTruck (Regular Cab)
SLETruck (Regular Cab)
SLTTruck (Crew Cab)
AT4Truck (Crew Cab)
DenaliTruck (Crew Cab)
Denali UltimateTruck (Crew Cab)
Doors
Pro2
SLE2
SLT4
AT44
Denali4
Denali Ultimate4
Seating
Pro3
SLE3
SLT6
AT45
Denali5
Denali Ultimate5
Length
Pro236.3 in
SLE236.3 in
SLT250.8 in
AT4250.8 in
Denali250.8 in
Denali Ultimate250.8 in
Width
Pro81.9 in
SLE81.9 in
SLT81.9 in
AT481.9 in
Denali81.9 in
Denali Ultimate81.9 in
Height
Pro80.9 in
SLE80.9 in
SLT80.9 in
AT481.2 in
Denali80.9 in
Denali Ultimate81.2 in
Wheelbase
Pro142 in
SLE142 in
SLT159 in
AT4159 in
Denali159 in
Denali Ultimate159 in
Ground clearance
Pro11.2 in
SLE11.2 in
SLT11.2 in
AT411.2 in
Denali11.2 in
Denali Ultimate11.2 in

Capacity & weight

Max towing
Pro14,500 lbs
SLE14,500 lbs
SLT20,000 lbs
AT420,000 lbs
Denali20,000 lbs
Denali Ultimate20,000 lbs
Max payload
Pro4,583 lbs
SLE4,583 lbs
SLT4,332 lbs
AT43,995 lbs
Denali4,361 lbs
Denali Ultimate3,729 lbs
Curb weight
Pro6,329 lbs
SLE6,329 lbs
SLT6,830 lbs
AT47,517 lbs
Denali7,151 lbs
Denali Ultimate8,333 lbs
Fuel tank
Pro36 gal
SLE36 gal
SLT36 gal
AT436 gal
Denali36 gal
Denali Ultimate36 gal

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2025 GMC Sierra 3500 HD: Prices, Trims, Specs & Safety | Open Dealer