Page 1 of 1 The foundation of the Hummer brand is the H1, introduced over a decade ago. Over the years the H1 has received some revisions to further improve its performance. The H1 is powered by a 6.5-liter, 195-horsepower Turbodiesel engine manufactured by AM General, which generates 590nm of torque. Its near-midship location provides excellent weight distribution. GM's 4L80-E electronically controlled four-speed automatic transmission allows smooth transition of power for improved mobility off-road. Over time, it monitors the customer's driving technique and adjusts for driving style. The New Venture Gear Model 242 transfer case enables the driver to customize the drivetrain configurations to match virtually any terrain. H1 has a four-wheel fully independent suspension system and variable-rate heavy-duty springs. The front suspension incorporates a large stabilizer bar to improve handling and reduce sway when turning. The truck's four-channel ABS four-wheel power disc brakes are mounted inboard as a component of the axle assembly, making them less vulnerable to damage than conventional wheel-mounted components. H1's Central Tire Inflation System (CTIS) enables the customer to adjust tire pressure on the move and adapt to varying terrain. When the H1's tires are deflated, the size of the tire footprint is increased, providing better traction in snow, loose sand and mud. Page 1 of 1