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  4. 2025 GMC Sierra 2500HD

2025 GMC Sierra 2500HD

$46,300 - $93,600Starting MSRP
2025 GMC Sierra 2500HD Onyx Black
2025 GMC Sierra 2500HD Onyx Black
2025 GMC Sierra 2500HD Onyx Black

Onyx Black

Model Highlights
Transmission

Automatic

Body Type

Truck

Seatings

5 Seats

Overview

The Sierra HD comes in one of several different body styles with long and short bed options. However, despite this complexity there are only two available engines, both V8 units displacing 6.6 liters. The gasoline option makes 401 horsepower and...

2025 GMC Sierra 2500HD

Build Your Own 2025 GMC Sierra 2500HD

What’s new in the 2025 model?

The GMC Sierra 2500HD and 3500HD roll into 2025 with minimal changes.

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GMC Sierra 2500HD
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Colors

Exterior

Onyx Black
Downpour Metallic
Sterling Metallic
Titanium Rush Metallic
Summit White
White Frost Tricoat

Specs

Engine Order Code: L5P
Engine Type: Turbocharged Diesel V8
Displacement: 6.6L/- TBD -
Fuel System: Direct Injection
SAE Net Horsepower @ RPM: 470 @ 2800
SAE Net Torque @ RPM: 975 @ 1600
Engine Oil Cooler: - TBD -
Drivetrain: Four Wheel Drive
Trans Order Code: MGM
Trans Type: 10
Trans Description Cont.: Automatic
Trans Description Cont. Again:
First Gear Ratio (:1): 4.54
Second Gear Ratio (:1): 2.87
Third Gear Ratio (:1): 2.06
Fourth Gear Ratio (:1): 1.72
Fifth Gear Ratio (:1): 1.48
Sixth Gear Ratio (:1): 1.26
Seventh Gear Ratio (:1): 1.00
Eighth Gear Ratio (:1): 0.85
Ninth Gear Ratio (:1): 0.69
Tenth Gear Ratio (:1): 0.63
Reverse Ratio (:1): 4.54
Clutch Size (in): N/A
Trans Power Take Off:
Trans PTO Access:
Transfer Case Model: - TBD -
Transfer Case Gear Ratio (:1), High: - TBD -
Transfer Case Gear Ratio (:1), Low: - TBD -
Transfer Case Power Take Off:
Fuel Economy Est-Combined (MPG):
EPA Fuel Economy Est - City (MPG):
EPA Fuel Economy Est - Hwy (MPG):
Cold Cranking Amps @ 0° F (Primary): 730
Cold Cranking Amps @ 0° F (2nd):
Maximum Alternator Capacity (amps): 220
Maximum Alternator Watts: N/A
Total Cooling System Capacity (qts): - TBD -
Gross Axle Wt Rating - Front (lbs): - TBD -
Gross Axle Wt Rating - Rear (lbs): - TBD -
Curb Weight - Front (lbs): 4089
Curb Weight - Rear (lbs): 2847
Gross Vehicle Weight Rating Cap (lbs): 11550
Gross Combined Wt Rating (lbs): 26000
Dead Weight Hitch - Max Trailer Wt. (lbs): 5000
Dead Weight Hitch - Max Tongue Wt. (lbs): 500
Wt Distributing Hitch - Max Trailer Wt. (lbs): 18500
Wt Distributing Hitch - Max Tongue Wt. (lbs): 1850
Fifth Wheel Hitch - Max Trailer Wt. (lbs): 17900
Fifth Wheel Hitch - Max Tongue Wt. (lbs): 4475
Maximum Trailering Capacity (lbs): 20000
Suspension Type - Front: Short/Long Arm
Suspension Type - Rear: Multi-Leaf Springs
Spring Capacity - Front (lbs): - TBD -
Spring Capacity - Rear (lbs): - TBD -
Axle Type - Front: - TBD -
Axle Type - Rear: - TBD -
Axle Capacity - Front (lbs): - TBD -
Axle Capacity - Rear (lbs): - TBD -
Axle Ratio (:1) - Front: 3.42
Axle Ratio (:1) - Rear: 3.42
Shock Absorber Diameter - Front (mm): 2.01
Shock Absorber Diameter - Rear (mm): 2.01
Stabilizer Bar Diameter - Front (in): 1.38
Stabilizer Bar Diameter - Rear (in):
Brake Type: Pwr
Brake ABS System: 4-Wheel
Brake ABS System (Second Line):
Disc - Front (Yes or ): Yes
Disc - Rear (Yes or ): Yes
Front Brake Rotor Diam x Thickness (in): 14 x 1.6
Rear Brake Rotor Diam x Thickness (in): 14.1 x 1.3
Drum - Rear (Yes or ):
Rear Drum Diam x Width (in):
Front Tire Order Code: QF9
Rear Tire Order Code: QF9
Spare Tire Order Code: ZYG
Front Tire Size: LT275/65R20
Rear Tire Size: LT275/65R20
Spare Tire Size: LT275/70R18
Front Tire Capacity (lbs): - TBD -
Rear Tire Capacity (lbs): - TBD -
Spare Tire Capacity (lbs): - TBD -
Revolutions/Mile @ 45 mph - Front: N/A
Revolutions/Mile @ 45 mph - Rear: N/A
Revolutions/Mile @ 45 mph - Spare: N/A
Front Wheel Size (in): 20 x - TBD -
Rear Wheel Size (in): 20 x - TBD -
Spare Wheel Size (in):
Front Wheel Material: Aluminum
Rear Wheel Material: Aluminum
Spare Wheel Material: Steel
Steering Type: Pwr Recirculating Ball
Steering Ratio (:1), On Center: - TBD -
Steering Ratio (:1), At Lock: - TBD -
Turning Diameter - Curb to Curb (ft): 57
Turning Diameter - Wall to Wall (ft): N/A
Frame Type: - TBD -
Fuel Tank Capacity, Approx (gal): 36
Aux Fuel Tank Capacity, Approx (gal):
Fuel Tank Location: - TBD -
Aux Fuel Tank Location:
Wheelbase (in): 172
Length, Overall (in): 266.77
Width, Max w/o mirrors (in): 81.85
Height, Overall (in): 79.65
Overhang, Front (in): - TBD -
Overhang, Rear w/o bumper (in): - TBD -
Front Bumper to Back of Cab (in): - TBD -
Cab to Axle (in): 55.24
Cab to End of Frame (in): - TBD -
Ground to Top of Load Floor (in): - TBD -
Ground to Top of Frame (in): - TBD -
Frame Width, Rear (in): - TBD -
Ground Clearance, Front (in): 10.28
Ground Clearance, Rear (in): 10.28
Cargo Box Length @ Floor (in): 98.27
Cargo Box Width @ Top, Rear (in): - TBD -
Cargo Box Width @ Floor (in): 71.4
Cargo Box Width @ Wheelhousings (in): 50.55
Cargo Box (Area) Height (in): 21
Tailgate Width (in): - TBD -
Cargo Volume (ft³): 83.5
Ext'd Cab Cargo Volume (ft³): - TBD -
Passenger Capacity: 5
Front Head Room (in): 43.03
Front Leg Room (in): 44.53
Front Shoulder Room (in): 66.02
Front Hip Room (in): 61.18
Second Head Room (in): 40.12
Second Leg Room (in): 43.4
Second Shoulder Room (in): 65.3
Second Hip Room (in): 60.24
Vehicle Name: GMC Sierra 2500HD
Body Style: Crew Cab Pickup
Body Code: E63
Tons/yr of CO2 Emissions @ 15K mi/year:

Pricing

This model has 31 different trims.

MSRP
$93,600
Invoice
$87,609
Description
6.6L/- TBD -, 470 @ 2800, Automatic
See All Pricings

Fuel Economy

This model has 31 different trims.

City
undefined MPG
Hwy
undefined MPG
Combined
undefined MPG
Description
6.6L/- TBD -, 470 @ 2800, Automatic
See All MPGs

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