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Home » Hummer Timeline » 2009 Hummer H2 (Powertrain & Chassis)
 
 
2009 HUMMER H2
 
Powertrain
The pulling power of the H2 comes from its 6.2L V-8 engine that uses variable valve timing technology to maximize performance and fuel efficiency. It is rated at 393 horsepower (293 kW)* and 415 lb.-ft. of torque (563 Nm)*. The engine also features lightweight materials, including an aluminum cylinder block. New for ’09, the 6.2L engine is calibrated to run on E85 ethanol.

A six-speed Hydra-Matic 6L80 RWD electronically controlled automatic transmission backs the 6.2L engine. It has a wide, 6.04:1 overall ratio – including two overdrive gears – that helps deliver an excellent balance of performance and fuel economy. Also, the 6L80 has a “tap up/tap down” capability that allows the driver to manually select upshifts and downshifts with buttons on the steering wheel. It provides an off-road crawl ratio of approximately 39:1.

A 3.73 axle ratio and features such as regulated voltage control that charges electrical components only when necessary help maximize the H2’s efficiency, while the powertrain enables a towing capacity of 8,200 pounds (3,727 kg).

Chassis
The H2’s foundation is a fully welded, ladder-type frame that features a modular, three-piece design incorporating a number of hydroformed components. This design delivers outstanding strength, stiffness and dimensional accuracy.

Short overhangs allow radical approach and departure angles, as well as exceptional ground clearance for minimal impact on trails. Standard 17-inch wheels, heavy-duty independent front suspension and a five-link rear suspension provide superior handling, carrying and towing capability.

A solid rear axle ensures durable sure-footedness, particularly in tight, off-road situations. Also standard is underbody protection and rocker protection. These elements help the H2 deliver on HUMMER’s mantra of capability, including traveling through streams 24 inches (508 mm) deep, climbing 16-inch (406-mm) steps and rocks and paddling through deep sand or snow.

The H2 features a four-channel anti-lock braking/traction control system (ABS/TCS) that provides optimum control on slippery surfaces. In addition, the ABS can detect and adjust its braking capabilities to rough off-road surfaces like gravel and potholes. The new traction system allows the driver to use a two-foot driving technique (one foot the brake, the other on the gas pedal), which is the best driving style for negotiating a steep, rocky trail. The TCS also includes the ability to gain traction through a single wheel.

A self-leveling rear air spring suspension system is available for extreme off-road and towing requirements.

 
 
 
 
 
 
 
 
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