The
H3T’s frame and suspension system
are based on a stretched version of the H3 SUV’s chassis and suspension – the
same race-proven design found on Baja 1000-winning stock-class race trucks.
The wheelbase measures 134.2 inches (3,409 mm) – 22 inches (86
mm) longer than the H3 SUV. A ladder-type frame is the truck’s
foundation and it has a modular, three-piece design that incorporates
fully boxed components for outstanding strength and stiffness. An independent
SLA torsion bar front suspension and multileaf Hotchkiss-type rear suspension
are used. There are two suspension packages available:
Z85
Heavy-Duty Handling and Trailering – This
standard suspension delivers an excellent balance of on-highway comfort
and off-road capability. It includes 32-inch all-terrain tires mounted
on 16-inch, smoke-color steel wheels, specially tuned heavy-duty shocks
and either a 4.56-ratio (3.7L) or 4.10-ratio (5.3L) rear axle.
Off-Road
Adventure – Designed for more aggressive
off-road performance, this optional suspension package includes taller,
33-inch tires, specifically tuned shocks, locking front and rear differentials,
4.03:1 low-range gearing in the transfer case and industry-leading
crawl ratios of either 68.9 with the manual transmission or 56.2 with
the automatic.
To support
the torque output of the 5.3L V-8, the H3T Alpha’s
front differential case is made of cast iron; other models feature an
aluminum case. V-8-powered vehicles also receive higher torsion bar rates
to support the increased mass and specific shock valving. The chassis
and suspensions were validated in real-world testing on off-road trails
in Moab, Utah; the Rubicon Trail in California, and other challenging
off-road venues.
Off-road
capability
The H3T
lives up to HUMMER’s legendary off-road
reputation, with best-in-class extreme off-road capability. Highlights
include:
Ability
to climb a 60-percent grade and traverse a 40-percent side slopeExceptional
10.2-inch (285 mm) ground clearance (with 33-inch tires)38.7-degree
approach angle and 30.1-degree departure angle (with 33-inch tires)Segment-first
available front- and rear-locking differentials
Standard HUMMER Hill Hold Assist for improved hill ascension
“For
most lifestyles, there’s almost nothing the H3T can’t
handle,” said Walsh. “It’s a truck with HUMMER’s
immutable capability.”Complementing the features that enable the
H3T’s
impressive off-road prowess is a host of first-class protective elements,
including four standard skid shields: a front shield, an oil-pan shield/front-axle
shield, a transfer case shield and a fuel tank shield.
Safety
Continuing
HUMMER’s tradition of delivering a broad range of safety
systems, the H3T offers the following standard features:
Dual
frontal air bags with GM’s passenger sensing systemHead curtain
side-impact air bagsStabiliTrak electronic vehicle stability control
systemFour-wheel ABS with traction controlTire pressure monitoring
systemLATCH rear child seat anchors
OnStar
with one-year Safe & Sound service
The H3T was also designed for vehicle-to-vehicle compatibility in the event
of a crash and its rigid body structure provides good passenger protection.
