HUMMER announced the 2008 H2, with a completely redesigned, more refined interior that combines luxury with HUMMER's legendary ruggedness; enhanced safety features and a more powerful engine that is coupled with a new, six-speed automatic transmission. The new powertrain combination improves efficiency when compared with previous models.
"The 2008 HUMMER H2 represents a major step in the evolution of this iconic vehicle," said Martin Walsh, HUMMER general manager. "From performance to comfort to safety and overall refinement, the new H2 lineup delivers more of what customers expect from HUMMER; they will be especially impressed with the new, more refined interior."
HUMMER revealed the 2008 H2 at the New York Auto Show. The powertrain, interior and exterior changes also are included on the H2 SUT. The '08 H2 and H2 SUT go on sale later this year.
Driving Experience :
The heart of the '08 H2 is a new, 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 (574 Nm). The engine also features lightweight materials, including an aluminum cylinder block, which helps reduce the vehicle's overall mass.
The 6.2L V-8's technologically advanced features also help it meet new federal emissions standards a year before mandatory implementation.
A new six-speed Hydra-Matic 6L80 RWD electronically controlled automatic transmission backs the 6.2L engine. The six-speed automatic 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 a button on the column shifter.
The new powertrain combination helps the 2008 H2 and H2 SUT deliver an additional 1,500 pounds (680 kg) in towing capacity - an increase from 6,500 pounds (2,948 kg) to 8,000 pounds (3,629 kg). A host of additional powertrain revisions also contributes to the H2's improved performance and efficiency, including:
Larger-capacity cooling system complements larger, more powerful engine
Electric engine cooling fans reduce "drag" on engine, enabling more horsepower
Regulated voltage control maximizes fuel economy by charging electrical components only when necessary
New LAN electrical architecture is more efficient and uses less electrical energy
Standard 3.73 rear axle ratio
Off-road acumen also was enhanced with the new powertrain system. The 6L80 transmission's tap up/tap down feature provides more control on grades and it offers automatic grade braking. It also improves the off-road crawl ratio to approximately 39:1 - an improvement of about 20 percent.
The transfer case is improved in the '08 H2; it is stronger with improved performance. A new traction control system also is standard, which helps ensure sure-footed traction in most driving conditions.
Driving performance off the road or on is enhanced by a revised steering gear that has a quicker ratio and improved on-center returnability. The driving experience also is quieter and more refined, thanks to new, tuned air intake and exhaust systems.
Safety Standard :
Complementing the H2 lineup's performance and comfort changes are enhancements to the safety system. They include several new standard features:
Roof rail head curtain side air bags for first-, second- and third-row passengers with rollover sensing system
Safety belt pretensioners (first-row seats)
Electronic stability control system with rollover mitigation technology
New traction control system
Tire pressure monitoring system
Also new is a panic brake assist feature - the first application for a full-size GM truck or SUV - which detects emergency braking situations and maintains maximum brake pressure to help stop the vehicle more quickly and with more control. It is a standard feature on all H2 models. Also, the standard OnStar system now offers the optional Turn-By-Turn navigation system. Additional optional features that contribute to a safer driving experience include HUMMER's Rear Vision System - a rearview camera system - and a navigation system.
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