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For 2013, the Overland Summit models gain Front Park Assist, power-folding mirrors, headlamp washers and a new black Nappa leather interior option. Also new is the Trailhawk model that includes the Select-Terrain system, Quadra-Lift air suspension, Goodyear Silent Armor off-road tires and rock-rail body protection.
Given the very big changes made in 2011, this is a year of tweaking a "still new" redesign. V6 models receive an electrohydraulic power steering system, while the V8's automatic transmission now provides six speeds when shifted in manual mode. And the HEMI-equipped SRT8 is revived, with 6.4 liters and 470 horsepower of urge.
Big changes for 2011 on the Jeep Grand Cherokee include improved interior space, an all-new V6 engine, an updated V8 engine and enhanced four-wheel drive systems. Jeep has also added a host of optional features not previously seen on the Grand Cherokee, including adaptive cruise control, a power rear lift gate and a blind-spot warning system.
The 4.7-liter V8 engine receives a major overhaul resulting in improved horsepower and fuel economy. HID (High Intensity Discharge) headlights are a new option, as is SIRIUS Backseat TV. Jeep has Hill Descent Control, which is made standard on 4x4 models with Quadra-Trac II and Quadra-Drive II, while Hill Start Assist and Trailer Sway Control are also made available.
The Grand Cherokee is legendary for its rugged off-road ability, sensible size and car-like ride and interior. While most SUVs have grown to near-gargantuan proportions, the Grand Cherokee remains true to the original model. Engine choices, however, have grown larger and include a fuel-efficient V6, a powerful HEMI V8 and, new for 2007, a torque-happy turbodiesel, a first for the Grand Cherokee line. The introduction of the 3.0-liter Common Rail Diesel is another benefit resulting from the merger between Chrysler and Mercedes-Benz. Jeep also offers a choice of three four-wheel-drive systems, ranging from a basic shift-on-the-fly high/low transfer case to a permanently-engaged system capable of sending power to whichever wheel has traction.