Sure, GMC trucks and SUVs look great, but they aren’t made for the showroom—they’re designed, engineered, and built for total vehicle performance that gets things done. That’s why GMC’s Vortec® and DURAMAX® engines deliver performance without concession, providing outstanding power and torque when the job calls for maximum effort.

GMC vortec engines enhance vehicle performance

Vortec Engines

To give you uncompromised vehicle performance with the power and torque you need for confident daily driving, passing, and trailering, look no further than the Vortec engine family available on GMC Sierra and Yukon models.

GMC provides uncompromised vehicle performance with Vortec engines that use vortex technology in the Sierra and Yukon models

Vortec™ Availability & Performance:

Vortec 4.3L V6

  • Available in the GMC Sierra 1500
  • Horsepower: 195 hp @ 4600 rpm — Torque: 260 lb-ft @ 2800 rpm

Vortec 4.8L V8 VVT

  • Available in the GMC Sierra 1500
  • Horsepower: 302 hp @ 5600 rpm — Torque: 305 lb-ft @ 4600 rpm

Vortec 5.3L V8 VVT

  • Available in the GMC Sierra 1500 and Yukon models
  • Horsepower: 315 hp @ 5200 rpm — Torque: 335 lb-ft @ 4000 rpm (Sierra)
  • Horsepower: 320 hp @ 5400 rpm — Torque: 335 lb-ft @ 4000 rpm (Yukon)

Vortec 6.0L V8 VVT

  • Available in the GMC Sierra 2500HD and 3500HD and Yukon 3/4-ton models
  • Horsepower: 352 hp @ 5400 rpm — Torque: 382 lb-ft @ 4200 rpm (Yukon)
  • Horsepower: 360 hp @ 5400 rpm — Torque: 380 lb-ft @ 4200 rpm (Sierra)

Vortec 6.2L V8 VVT

  • Available in the GMC Sierra 1500 and Yukon models
  • Horsepower: 403 hp @ 5700 rpm — Torque: 417 lb-ft @ 4300 rpm

Hybrid-Only Vortec 6.0L V8 VVT with Active Fuel Management™

  • Available in Sierra Hybrid and Yukon Hybrid models
  • Horsepower: 332 hp @ 5100 RPM — Torque: 367 lb-ft @ 4100 rpm

Vortec™ Engine Features

The advanced vehicle performance technologies behind our most innovative engines.

Many Vortec engines optimize vehicle performance with variable valve timing

Variable Valve Timing

Many Vortec engines optimize vehicle performance with Variable Valve Timing for easy responsiveness in low-speed city driving and bold power for open-road passing or trailering. It monitors and changes valve open-and-close points for near-peak levels of torque across a full range of engines speeds.

Active Fuel Management™

For maximum fuel economy without a compromise in vehicle performance, GMC offers Active Fuel Management.™ This advanced truck engine technology, available on Sierra, Yukon 5.3L, and Sierra 6.0L engines, seamlessly activates or deactivates four of the engine’s cylinders in response to your vehicle’s performance and power needs, thereby consuming less fuel. In Sierra XFE (Extra Fuel Economy) models, the result is a best-in-class V8 with an EPA-estimated 22 highway MPG.

300-Volt NiMH Battery Pack

On GMC Hybrid models, Nickel-Metal Hydride battery technology allows substantial energy to be stored in a small space. In fact, the 300-volt battery pack is strong enough to propel a Sierra or Yukon for miles, yet small enough to fit under the rear seat. This leaves cargo space and passenger capacity unchanged compared to other Sierra and Yukon models—another example of our ability to increase efficiency without compromising vehicle performance.


For off-the-chart horsepower and torque with off-the-map range, Sierra 2500HD and 3500HD Heavy Duty trucks are available equipped with heavy-duty performance DURAMAX® Diesel engines.

Improving vehicle performance, the DURAMAX diesel 6.6L V8 with 765 lb-ft of torque provides superior power for accelerating and decelerating with large loads

DURAMAX®Diesel 6.6L V8 Turbo

With advanced direct-injection technology that helps start the Sierra HD in as little as 3.0 seconds (even at -40°F) and a sophisticated Allison® transmission with overdrive, this available powertrain delivers maximum highway performance, with a range of up to 680 miles on a single fill-up, thanks to its 36-gallon fuel tank.

  • Available in the GMC Sierra 2500HD and 3500HD models
  • Horsepower: 397 hp @ 3000 rpm — Torque: 765 lb-ft @ 1600 rpm

DURAMAX® B20 Biodiesel Capability

To reduce carbon dioxide emissions and stretch your fuel budget further—without sacrificing vehicle performance—the DURAMAX 6.6L engine is engineered to operate on B20 biodiesel fuel, a mixture of 80% petroleum diesel and 20% biodiesel produced from domestic, renewable resources.

DURAMAX® High-Pressure Direct Injection

GMC direct fuel-injection technology operates at nearly 30,000 psi to turn heavy diesel fuel into a fine mist that burns clean and fast. The results are faster starts in cold weather and quieter operation, as well as lower emissions, greater power for maximum efficiency, and overall outstanding vehicle performance.