GMC Sierra 3500 Horsepower & Torque (2002 - 2025): Your Comprehensive Guide

The GMC Sierra 3500 is a heavy-duty truck renowned for its durability and towing capabilities, serving as a cornerstone in GMC's lineup since its introduction in 2002.

Over the years, the Sierra 3500 has seen significant performance upgrades, starting with a 6.0L Vortec V8 producing 300 horsepower and 360 lb-ft of torque in 2007.

By 2025, it offers a 6.6L Duramax diesel engine delivering 470 horsepower and an impressive 975 lb-ft of torque, paired with an Allison 10-speed automatic transmission.

This evolution highlights its ability to meet the demands of modern heavy-duty applications while maintaining its reputation for reliability.

Scroll down to see the full horsepower and torque data below.

Check out the Horsepower And Torque specifications for other makes and models.

Fourth-generation Silverado / fifth-generation Sierra: 2019-2019

2019 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L VORTEC VARIABLE VALVE TIMING SFI E85-COMPATIBLE FLEXFUEL engine, producing a consistent 360 horsepower and 380 lb-ft of torque across configurations.

It is available with both 2WD and 4WD drivetrain options and features a 6-speed automatic transmission.

Third-generation Silverado / fourth-generation Sierra: 2014-2014

2014 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L Vortec Variable Valve Timing SFI E85-compatible flex-fuel engine, producing a consistent horsepower output of 322 hp and torque of 380 lb-ft across configurations.

This vehicle is available in both 2WD and 4WD drivetrain configurations and features a 6-speed automatic transmission.

Second-generation Silverado / third-generation Sierra: 2007-2013

2013 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L Vortec Variable Valve Timing SFI E85-compatible flex-fuel engine, producing a consistent output of 322 horsepower and 380 lb-ft of torque across configurations.

This vehicle is available with both 2WD and 4WD drivetrain options and features a 6-speed automatic transmission.

2012 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L VORTEC VARIABLE VALVE TIMING SFI E85-COMPATIBLE FLEXFUEL engine, producing a consistent horsepower of 322 hp and torque of 380 lb-ft across configurations.

It is available with both 2WD and 4WD drivetrain options and features a 6-speed automatic transmission.

2011 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L Vortec Variable Valve Timing SFI engine, producing a consistent output of 322 horsepower and 380 lb-ft of torque across configurations.

It is available with both 2WD and 4WD drivetrain options and utilizes a 6-speed automatic transmission.

2010 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L VORTEC engine, offering a horsepower range from 312 hp with the VORTEC VARIABLE VALVE TIMING SFI configuration in 2WD to 360 hp with the VORTEC SFI configuration in 2WD.

Torque output varies from 373 lb-ft with the VORTEC VARIABLE VALVE TIMING SFI in 2WD to 380 lb-ft with the VORTEC SFI in 2WD.

The vehicle is available in both 2WD and 4WD drivetrain configurations and utilizes a 6-speed automatic transmission.

2009 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L VORTEC VARIABLE VALVE TIMING engine, producing a horsepower range of 312 hp in 2WD configurations to 360 hp in 2WD Crew Cab configurations.

Torque output varies from 373 lb-ft in 2WD to 380 lb-ft in 2WD Crew Cab configurations.

Available drivetrains include 2WD and 4WD, paired with a 6-speed automatic transmission.

2008 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L or 6.6L VORTEC VARIABLE VALVE TIMING SFI engine, producing a consistent horsepower of 353 hp and torque of 373 lb-ft across configurations.

It offers both 2WD and 4WD drivetrain options and utilizes a 6-speed automatic transmission for power delivery.

2007 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L VORTEC SFI engine producing 300 hp in 2WD configuration, while the VORTEC VARIABLE VALVE TIMING SFI engine increases output to 353 hp in 2WD. Torque ranges from 360 lb-ft with the VORTEC SFI engine to 373 lb-ft with the VORTEC VARIABLE VALVE TIMING SFI engine, depending on the drivetrain configuration.

The vehicle is available in both 2WD and 4WD configurations, utilizing a 4-speed automatic transmission for the VORTEC SFI engine and a 6-speed automatic transmission for the VORTEC VARIABLE VALVE TIMING SFI engine.

First-generation Silverado / second-generation Sierra: 1999-2006

2006 GMC Sierra 3500 Horsepower

The 2006 GMC Sierra 3500 is equipped with a VORTEC 6000 SFI engine, producing a consistent 300 horsepower and 360 lb-ft of torque across configurations.

It is available with both 2WD and 4WD drivetrain options and features a 4-speed automatic transmission that is electronically controlled with overdrive and tow/haul mode.

2005 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a VORTEC 6000 SFI engine, producing a consistent horsepower output of 300 hp and torque of 360 lb-ft across configurations.

It is available in both 2WD and 4WD drivetrain configurations, paired with a 4-speed automatic transmission that features electronically controlled operation with overdrive and tow/haul mode.

2004 GMC Sierra 3500 Horsepower

The 2004 GMC Sierra 3500 is equipped with a VORTEC 6000 SFI engine, producing a consistent output of 300 horsepower and 360 lb-ft of torque across configurations.

It is available with both 2WD and 4WD drivetrain options, paired with a 5-speed manual transmission featuring overdrive.

2003 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a VORTEC 6000 SFI engine, producing a consistent output of 300 horsepower and 360 lb-ft of torque across configurations.

It is available with both 2WD and 4WD drivetrain options, paired with a 5-speed manual transmission featuring overdrive.

2002 GMC Sierra 3500 Horsepower

The GMC Sierra 3500 is equipped with a 6.0L (364) SFI (VORTEC) engine, producing a consistent output of 300 horsepower and 360 lb-ft of torque across configurations.

It is available with both 2WD and 4WD drivetrain options and features a 5-speed manual transmission with deep low and overdrive capabilities.