2007 Hummer H3
|Production||April 2005–May 24, 2010|
|Body and chassis|
|Class||Mid-size SUV / Pickup truck|
4-door pickup truck
|Layout||Front engine, four-wheel drive|
|Platform||GM GMT345 platform|
|Width||74.7 in (1,897 mm)|
|Curb weight||4,700–4,900 lb (2,100–2,200 kg)|
The Hummer H3 is a sport utility vehicle/off-road vehicle from Hummer that was produced from 2005 to 2010. Introduced for the 2006 model year, it was based on a highly modified GMT355 underpinning the Chevrolet Colorado/GMC Canyon compact pickup trucks that were also built at GM's Shreveport Operations in Shreveport, Louisiana and the Port Elizabeth plant in South Africa. The H3 was actually the smallest among the Hummer models. It was available either as a traditional midsize SUV or as a midsize pickup known as the H3T. The H3 and the Colorado/Canyon are very different, as GM claims they share about 10% of their components, while the chassis was also completely modified and reinforced for heavy off road duties.
The H3 was launched with a 3.5 liter straight-5 cylinder L52 engine that produced 220 hp (160 kW) and 225 lbf⋅ft (305 N⋅m) of torque and was mated to a standard five-speed Aisin AR5 manual transmission or an optional Hydra-Matic 4L60-E four-speed automatic transmission. In 2007 this engine was replaced by the 3.7 liter LLR that produced 242 hp (180 kW) and 242 lbf⋅ft (328 N⋅m) of torque, figures that were revised in 2009 to 239 hp (178 kW) and 241 lbf⋅ft (327 N⋅m). Under revised EPA testing standards when equipped with either transmission this straight-5 engine achieved 14 mpg‑US (17 l/100 km) in the city and 18 mpg‑US (13 l/100 km) on the highway with a combined average of 15 mpg‑US (16 l/100 km). Available solely with the automatic transmission, a 5.3 liter LH8 V8 engine producing 300 hp (220 kW) and 320 lbf⋅ft (430 N⋅m) of torque was added in 2008 for the Alpha model. The V8 version had lower fuel economy, estimated at 13 mpg‑US (18 l/100 km) in the city, 16 mpg‑US (15 l/100 km) on the highway, with a combined average of 14 mpg‑US (17 l/100 km).
The H3 featured a two-speed, electronically controlled full-time four-wheel drive system that made it for both on-road and off-road driving. Electronic locking front and rear differentials were optional. Like the Hummer H2, the H3 can ford 27 inches (690 mm) of water (tested in depths up to 34 in or 864 mm) at a speed of 5 mph (8.0 km/h) and 20 in (508 mm) of water at a speed of 20 mph (32 km/h). Standard ground clearance with the 31 inch tires measured at 9.7 in (246 mm) while the approach, departure, and breakover angles are measured at 37.4°, 34.7°, and 22.1° respectively, allowing the H3 to scale a 16-inch (406 mm) vertical wall and negotiate grades of 60% and side slopes of 40%. Front and rear recovery hooks were standard, with an optional trailer hitch and wiring harness. The H3 features an intelligent traction control similar to what modern Land Rover or Toyota off road vehicles have, which can use the brakes independently to stop wheelspin and improve traction while being adjusted automatically to the road conditions with no driver action. It is also equipped with Stabilitrak stability control, and intelligent ABS with variable brake force distribution assist.
The optional Adventure or Off Road package increased its capabilities even more, as it included 33 inch tires, a fully armored undercarriage, off road shocks, differential lockers and 4:1 Low Range gearing. All of these upgrades increased ground clearance, suspension articulation, approach and departure angles, and also increased the H3's undercarriage protection and durability. For many off road experts, the H3 is considered to be one of the most capable off road vehicles of all times in stock form and a very underrated SUV, with some arguing it was over egineered. GM experts developed it and tested in the most demanding conditions, which also made it not only a highly capable SUV, but also a very reliable and durable vehicle.
Maximum towing capacities were 3,000 lb (1,361 kg) for the straight-5 with manual transmission, 4,500 lb (2,041 kg) for the straight-5 with automatic transmission, and 6,000 lb (2,722 kg) for the V8 with automatic transmission. Cargo volume with the second-row seats in the upright position was 25.0 cubic feet (0.71 m3) that could be expanded to a maximum of 62.8 cubic feet (1.78 m3) when the seats are folded down. The V8 models featured the least maximum payload capacity of just over 1,100 lb (499 kg) while straight-5, manual transmission models allowed the greatest payload at 1,300 lb (590 kg).
Electronic stability control, anti-lock four-wheel disc brakes, brake-controlled traction control, LATCH child-seat anchors, and tire-pressure monitoring were standard features on the H3. Side-curtain airbags were optional until 2008 when they were made standard across. The H3 was rated Acceptable, the second highest rating, by the Insurance Institute for Highway Safety in both frontal offset and side-impact crashes (with side airbags) and Poor, the lowest rating, for rear-crash protection/head restraints.
The U.S. National Highway Traffic Safety Administration (NHTSA) gave the 2008 H3 the following scores:
- Frontal Driver:
- Frontal Passenger:
- Side Driver:
- Side Rear Passenger:
- AWD Rollover:
The vehicle was originally developed as a regular cab (two-door) concept pickup truck in 2003, that was shown at the 2004 Los Angeles Auto Show. The five-passenger four-door crew-cab production version appeared at the 2008 Chicago Auto Show. The H3T featured a 5-foot bed with built-in storage boxes and came in standard H3T, H3T Adventure, H3T Luxury, and H3T Alpha (with cloth or leather trim) trim packages.
A road test by Motor Trend reported the 2009 truck "crawled up rock steps, ran through sand washes, and navigated steep ledges with confidence and capability to spare." They described its turning radius "uncomfortably wide" and said "at highway cruising it would've been nice to have a faster, firmer feel.
Yearly U.S. sales
In 2007, GM South Africa launched Hummer production in Port Elizabeth. The plant manufactured the Hummer H3 for the South African market, as well as units exported to Asia and Europe. This factory also manufactured a right hand drive version for the Australian market between 2007 and 2009. In Australia, the Hummer was distributed by GM Holden by specialist dealerships that were also affiliated with the Saab automobile brand, which was owned by GM at that time.
The H3 was qualified in 2010 by the Japanese Transport Ministry for tax breaks that set easier fuel-efficiency standards for heavier vehicles. The 4,700-pound (2,132 kg) H3's 16 mpg‑US (15 L/100 km; 19 mpg‑imp) average in city traffic cleared the required Japanese emissions standards relative to its weight. A total of 723 Hummers were sold in Japan during the 12 months before March 2009.
In early 2009, Raser Technologies and FEV built a prototype plug-in hybrid H3 that could achieve up to 100 MPG given enough main power. This vehicle was renamed the Electric Hummer H3, and later showcased by California State Governor Arnold Schwarzenegger at a press conference at the State Capitol in Sacramento as part of a campaign to promote greener vehicles.
End of the H3
At the end of February 2010, General Motors announced it would begin dismantling the Hummer brand. After filling a rental-car fleet order, the last Hummer H3T rolled off line at Shreveport on May 24, 2010.
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