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.
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.
The advanced vehicle performance technologies behind our most innovative engines.
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.
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.
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.
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.
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.
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.
1. Always use safety belts and the correct child restraints for your child’s age and size. Even in vehicles equipped with air bags and the Passenger Sensing System, children are safer when properly secured in a rear seat in the appropriate infant, child, or booster seat. Never place a rear-facing infant restraint in the front seat of any vehicle equipped with an active frontal air bag.
Air bag inflation can cause severe injury or death to anyone too close to the bag when it deploys. Be sure every occupant is properly restrained. See the Owner’s Manual and child safety seat instructions for more safety information.
2. Head curtain side-impact air bags are designed to help reduce the risk of head and neck injuries to front and rear-seat outboard occupants on the near side of certain side-impact collisions. Always use safety belts and the correct child restraints for your child’s age and size, even in vehicles equipped with air bags. Children are safer when properly secured in a rear seat in the appropriate infant, child, or booster seat. See the Owner’s Manual and child safety seat instructions for more safety information.