Recent Articles
Popular Makes
Body Types
- Home
- GMC
- Sierra 3500HD
- 2025 GMC Sierra 3500HD
2025 GMC Sierra 3500HD
$47,500 - $96,900Starting MSRP
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...
Build Your Own 2025 GMC Sierra 3500HD
What’s new in the 2025 model?
The GMC Sierra 2500HD and 3500HD roll into 2025 with minimal changes.
Looking for alternatives to the GMC Sierra 3500HD?
Start Comparing NowColors
Exterior
Onyx Black
Downpour Metallic
Sterling Metallic
Titanium Rush Metallic
Summit White
White Frost Tricoat
Specs
Engine Order Code: L8T
Engine Type: Gas V8
Displacement: 6.6L/- TBD -
Fuel System: Direct Injection
SAE Net Horsepower @ RPM: 470 @ 2800
SAE Net Torque @ RPM: 975 @ 1600
Engine Oil Cooler: Yes
Drivetrain: Four Wheel Drive
Trans Order Code: MKM
Trans Type: 10
Trans Description Cont.: Automatic
Trans Description Cont. Again:
First Gear Ratio (:1): -TBD-
Second Gear Ratio (:1): -TBD-
Third Gear Ratio (:1): -TBD-
Fourth Gear Ratio (:1): -TBD-
Fifth Gear Ratio (:1): -TBD-
Sixth Gear Ratio (:1): -TBD-
Seventh Gear Ratio (:1): -TBD-
Eighth Gear Ratio (:1): -TBD-
Ninth Gear Ratio (:1): -TBD-
Tenth Gear Ratio (:1): -TBD-
Reverse Ratio (:1): -TBD-
Clutch Size (in):
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): 720
Cold Cranking Amps @ 0° F (2nd):
Maximum Alternator Capacity (amps): 170
Maximum Alternator Watts:
Total Cooling System Capacity (qts): - TBD -
Gross Axle Wt Rating - Front (lbs): 5200
Gross Axle Wt Rating - Rear (lbs): 7250
Curb Weight - Front (lbs): 4209
Curb Weight - Rear (lbs): 2870
Gross Vehicle Weight Rating Cap (lbs): 12250
Gross Combined Wt Rating (lbs): 24000
Dead Weight Hitch - Max Trailer Wt. (lbs): 5000
Dead Weight Hitch - Max Tongue Wt. (lbs): 500
Wt Distributing Hitch - Max Trailer Wt. (lbs): 20000
Wt Distributing Hitch - Max Tongue Wt. (lbs): 2000
Fifth Wheel Hitch - Max Trailer Wt. (lbs): 21000
Fifth Wheel Hitch - Max Tongue Wt. (lbs): 5250
Maximum Trailering Capacity (lbs): 20000
Suspension Type - Front: Short/Long Arm w/Torsion Bars
Suspension Type - Rear: 3-Stage Multi-Leaf
Spring Capacity - Front (lbs): - TBD -
Spring Capacity - Rear (lbs): - TBD -
Axle Type - Front: Independent
Axle Type - Rear: - TBD -
Axle Capacity - Front (lbs): - TBD -
Axle Capacity - Rear (lbs): - TBD -
Axle Ratio (:1) - Front: 3.73
Axle Ratio (:1) - Rear: 3.73
Shock Absorber Diameter - Front (mm): 51
Shock Absorber Diameter - Rear (mm): 51
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: QF6
Rear Tire Order Code: QF6
Spare Tire Order Code: ZYG
Front Tire Size: LT275/70R18
Rear Tire Size: LT275/70R18
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:
Revolutions/Mile @ 45 mph - Rear:
Revolutions/Mile @ 45 mph - Spare:
Front Wheel Size (in): 18 x 8
Rear Wheel Size (in): 18 x 8
Spare Wheel Size (in): 18 x 8
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: N/A
Turning Diameter - Curb to Curb (ft): 57.0
Turning Diameter - Wall to Wall (ft): N/A
Frame Type: Hydroformed
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): 80.67
Overhang, Front (in): - TBD -
Overhang, Rear w/o bumper (in): - TBD -
Front Bumper to Back of Cab (in): - TBD -
Cab to Axle (in): 55.2
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): 11.14
Ground Clearance, Rear (in): 11.14
Cargo Box Length @ Floor (in): 98.22
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 3500HD
Body Style: Crew Cab Pickup
Body Code: E63
Tons/yr of CO2 Emissions @ 15K mi/year:
Pricing
This model has 26 different trims.
MSRP
$96,900
Invoice
$90,698
Description
6.6L/- TBD -, 470 @ 2800, Automatic
Fuel Economy
This model has 26 different trims.
City
undefined MPG
Hwy
undefined MPG
Combined
undefined MPG
Description
6.6L/- TBD -, 470 @ 2800, Automatic
People who viewed the 2025 GMC Sierra 3500HD also viewed
Trending Related Articles
Get a Free Online Car Quote
Car of the Day
Resources
©2025 AutoWeb, Inc. All Rights Reserved.
Some content provided by and under copyright by Autodata, Inc. dba Chrome Data. © 1986-2025.