Mechanical
Overview
Borrowing from General Motors,
Hummer is using the proven Vortec 6000 V8 engine. Tuned
for the H2, the motor uses cast aluminum heads with sequential
fuel injection. The 6.0L engine is rated for 325HP at 5200rpm
and has 385lb-ft of torque at 3600rpm. A
special low-speed throttle progression calibration is used
when the H2 is in 4LO locked mode. Behind the Vortec
is the 4L65-E 4-speed automatic transmission and then the
all-new Borg-Warner 44-84 transfer case.
The H2's rear axle is the familiar GM 12 bolt solid axle
with disk brakes. The base rear suspension is a modified
GMT820 5-link setup with variable-rate coil springs and
46mm monotube gas shocks. An optional interactive air spring
suspension is available. On this suspension, an air compressor
inflates each of the two airbags in the rear independently
to raise the H2 in either an automatic, load-leveling mode
or by a switch. The compressor uses the H2 20/20 rule, which
means that it can pump up all of the tires 20 pounds in
20 minutes. See CAD
Drawings #7 and #8 for full graphics.
The front suspension is a GM 25-Series utility truck independent
setup using a 36mm stabilizer bar, 46mm monotube gas shocks,
and tuned torsion bars.
Though the H2 began life using more of a Suburban frame,
the final frame assembly is made up of 3 sections. The front
uses a modified GM 2500-Series utility frame. The mid-section
is all new and is completely boxed. The rear section uses
a modifed GM 1500-Series frame which is upgraded for 8000
pound gross vehicle weight. Front and rear receiver mounts
with 9000 pound winch capability are integrated into the
frame. The rear hitch has an estimated 7000 pound capacity.
Two different tire options will be available on H2, both
from BFGoodrich and will ride on 17" x 8.5" cast
aluminum rims. The standard tires will be the Long Trail
T/A LT285/70R17 (32.7" x 11.25") tires, while
the upgraded tires will be the more aggressive and larger
LT315/70R17 (34.4" x 12.40) All-Terrain T/As.
Exterior
and Interior Overview
As we mentioned earlier, the
H2 is very large and boxy like the Hummer H1. Most of the
body uses standard metal body panels, however, the tilt-forward
hood uses a compression-molding of SMC (sheet molding compound)
inner and outer panels. This is the same compound used for
Corvette body panels and is the largest SMC piece that GM
makes. The hood also features the instantly-recognized radiator
grill and air lift brackets found on the H1. Under inspection,
however, these are for appearance only and are not in any
way functional.
Climbing inside the H2 takes a bit effort, proving that
this is no ordinary SUV. An optional step is available for
those who need it and is easily detached when heading for
the great outdoors. The interior is a combination of GM
parts and all new H2 parts. The seats will look very familiar
to GM truck owners. The look, shape, and feel of the leather
is nearly identical that found in the Suburban, Tahoe, and
Silverado/SLT pickups.
The H2 has two front seats, a bench rear seat and an optional
single rear seat, providing room for six people. The rear-most
seat is removable and is a single seat because the full-size
spare wheel is kept in the back of the truck. So don't expect
to get tons of cargo in the rear of an H2, even with the
rear seats folded flat, unless you remove the spare, as
well as the third row seat. If you have the air suspension
option, an air outlet and switch can be found near the rear
hatch for connecting an air hose.
We
saw two different dashes in the two H2s. The Sunset Orange
Metallic H2 was the older of the two trucks on-hand. The
newer, final Beta version Sage Green Metallic H2 had the
production dash, which includes six white-faced gauges.
The entire dash is ultra-modern and has plenty of knobs
to play with for controlling HVAC, radio, CD, cassette,
transfer case and traction-control modes, etc. The transmission
shifter looks like it came right out of an airplane and
is mounted in front of the center console.
The rear seats are very comfortable and offer plenty of
room for seating, however, they do sit a bit high. The new
trend is to put stadium seating in SUVs, but the H2 could
use a wee bit more headroom in the back if you have tall
passengers. The seats fold flat just like in a Suburban
or Tahoe. The headrests break away allowing the seats to
go down even if the front seats are sitting back a good
ways. The rear passengers get their own air vents and radio
controls.
As for comfort and gadgetry, the H2 comes standard with
GM's OnStar and HomeLink systems and the tunes come from
a nine-speaker Bose system. The leather-wrapped steering
wheel has secondary radio controls so the driver can keep
their hands on the wheel. The HVAC has dual-zones for the
front passengers and outlets for the rear. Six power points
are found throughout the truck so you'll never have to look
far for one. Side mirrors can be folded in electronically
when you get into tight spaces on the trail or in the car
wash. Passengers will be happy to know that there are plenty
of places to grab and hold on in the H2 when the going gets
rough.
Can
it Really Go Off-Road?
|