The 2008 H3 also shares the H2's off-road prowess. Short overhangs, aggressive approach and departure angles and nine inches of ground clearance help navigate rough terrain. The standard rear axle is a tall 4.56 ratio, and the standard push-button transfer case has a 2.64 crawl ratio. Customers may also opt for an even taller 4:1 transfer case and a full-locking rear axle for extra-slow rock crawling.
The H3 is built on GM's Canyon/Colorado platform, but with a sturdier frame and specially tuned shocks. The H3 also features a two-speed transfer case and electronically controlled four-wheel-drive system with traction control. The H3 also has the option of riding on enormous LT285/75R16 tires, the largest available on any midsize SUV.
The 2008 Hummer shares its 3.7L inline five-cylinder engine with its pickup siblings, and it generates 242 horsepower and 242 ft-lbs of torque. The standard transmission is a five-speed manual, but Hummer does offer an electronic four-speed automatic transmission.
The standard suspension setup, the Z85 Handling/Trailering system, should be sufficient for most users. Those looking to test their H3s in the field will be interested in the ZM6 Off-Road Adventure suspension. This option includes a full-locking rear differential, the steeper 4:1 ratio transfer case and special off-road shocks.
A number of optional packages can dress up the 2008 H3. the H3X option adds all manner of interior and exterior visual enhancements, while the H3 Alpha option adds a 300-horsepower 5.3L V8, a 4.10 rear axle ratio, and a larger alternator. An Uplevel D?cor option upgrades the front seats to heated power leather.
The H3 comes with an array of options including a six-disc CD changer, an audio system with navigation, chromed aluminum wheels, rearview camera system, and a power sunroof.