Larger, four-wheel disc brakes and an all-new ABS system ensure braking performance at the top of the segment. Larger vented front and rear brake rotors, 50-percent stiffer dual-piston calipers and longer-life brake pads contribute to enhanced pedal feel, reduced brake noise, predictable, linear brake response and shorter braking distances. A new, Bosch 8.0 next-generation four-channel ABS system is standard. The ABS system works with the standard StabiliTrak electronic stability control system. In the new SUVs, StabiliTrak incorporates the first-time GM application of rollover mitigation, software algorithm technology that uses sensors to proactively predict vehicle "tip-up" and applies appropriate brake forces to help prevent such events.

Enhanced driving control and ride smoothness is offered with the available Autoride real-time damping system, which uses electronically controlled shock absorbers to make nearly instantaneous damping adjustments. The system "reads" the road and anticipates the best damping rates. Seventeen-inch wheels are standard on Yukon and Yukon XL; 20-inch wheels are available. The wheels are designed with premium-appearance faces, including available chrome or polished finish. New tires are tailored to the vehicles to provide excellent balance of handling, quietness and safety.


New small-block V-8 family

The new Gen IV small-block V-8 family powers the Yukon and Yukon XL, delivering more power than comparable powertrains in previous models. An iron-block Vortec 5.3L V-8 with 320 horsepower (239 kW)* and 340 lb.-ft. of torque (461 Nm)* offering Active Fuel Management technology is standard at the start of production; Yukon XL with 4WD (5.3L with aluminum cylinder block) delivers 310 hp (231 kW) and 335 lb.-ft of torque (454 Nm).* Active Fuel Management enables better fuel economy by switching between eight-cylinder and four-cylinder operation in appropriate, lower-demand situations. Operation is automatic and seamless to the driver. The engine uses less fuel when operating in four-cylinder mode.

A Vortec 4.8L V-8 is standard on the Yukon 2WD base model, starting in fall 2006 A Flex-fuel E85 version of the 5.3L engine, which is capable of running on E85 ethanol fuel or any mixture of E85 and gasoline, is standard on 4WD models and available on 2WD models. E85 is comprised of 85 percent ethanol, a renewable resource fuel produced in the United States that reduces carbon dioxide emissions

Available for fall production on 2007 GMC Yukon XL is a new, all-aluminum 6.0L V-8 with variable valve timing (VVT). It is rated at 366 horsepower (273 kW).* VVT helps optimize camshaft timing to improve low-rpm torque and high-rpm horsepower. The system is enabled by a unique cam phaser - the industry's first application of VVT on a mass-produced V-8 cam-in-block engine. The unique cam phaser adjusts the camshaft timing at the same rate for both the intake and exhaust valves.


2007 GMC Yukon and GMC Yukon XL - Safety and security

The '07 GMC Yukon and Yukon XL are designed to be among the industry's safest and most secure vehicles, with a 360-degree perimeter safety system of occupant protection and crash avoidance technologies. New features include head curtain side air bags with rollover protection for all seating rows and front-seat safety belt pretensioners that are linked to the vehicle's sensing system to provide segment-exclusive deployment in rear-end crashes. These features are integrated into a stronger vehicle structure that is also designed for improved compatibility with other vehicles.

The head curtain air bags include design features that provide increased rollover protection and occupant containment. Sensors located at the front of the vehicle, in the side doors, and within the occupant compartment provide increased and more immediate crash detection.

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