a 2015 GMC Sierra 3500HD 4WD Crew Cab Diesel, here are the key specifications:
Engine: 6.6L Duramax LML turbo-diesel V8
Horsepower: 397 hp
Torque: 765 lb-ft
Transmission: Allison 1000 6-speed automatic
Drivetrain: 4WD (electronic shift-on-the-fly)
Cab: Crew Cab (seats up to 6, depending on front seat configuration)
Fuel tank: 36 gallons
GVWR: Up to 13,025 lbs (varies by SRW vs. DRW and trim)
Maximum towing:
Conventional: around 13,00014,500 lbs
Fifth-wheel/gooseneck: up to about 23,000 lbs when properly equipped
Payload: Typically 3,5005,500 lbs, depending on configuration.
The 2015 Duramax LML is generally regarded as a strong, reliable diesel engine.
