The Hummer H1 is classified as a civilian off-road vehicle and is based on the M998 Humvee which was initially created by AM General. Production of this vehicle started in 1992 and went through 2006, becoming the first of the Hummer line of vehicles. This vehicle is was known simply as the “Hummer” at first, but in 1999 there was a joint venture between General Motors and AM General, wherein GM began to market the Hummer H2, which used a heavily modified version of the GMC 2500HD chassis. After the modified chassis, the Hummer was given the official H1 designation.
In March of 1992, the Hummer was released to the civilian market, but the reason for its popularity outside of military use is because of a series of photos from Operation Desert Storm as well as a campaign that was carried out by actor and politician Arnold Schwarzenegger, who himself owns a few different versions of this vehicle. AM General announced that the last H1 model would be made in 2006 because of the new emission law for diesel engine vehicles which started in 2007.
The Hummer H1 comes in three different versions, including the convertible soft-top, a 4-door hard top Sport Utility Truck, and an Alpha Wagon body version. Some of the other lesser-known variants of the Hummer include the 2-door pickup truck, which is usually seen in military sporting Anti-Air turrets, and the 4-door slantback, which uses the same body style as the Humvee that is used by the U.S. military. The convertible or soft top version of this vehicle as well as the station wagon versions were the last ones to be made available in the mass market. Both the 2-door and 4-door pickup versions of this vehicle were only available in fleet livery.
As of right now, there are five different engine types that the Hummer is available in, as well as three different automatic transmissions. Some of the more common engine/transmission combinations for this vehicle include the 6.2 liter Diesel V8/GM TH400/3L80 3-speed, the 6.5 liter GM Diesel V8/GM 4L80-E 4-speed, the 5.7 liter Vortec gasoline V8 TBI/GM 4L80-E 4-speed, the 6.5 liter turbo GM diesel V8/GM 4L80-E 4-speed, and the 6.6 liter turbo Duramax LLY V8 turbo Diesel/Allison 1000 5-speed, which was made for the 2006 model. Although there were other engine options made available for this vehicle, those were the primary ones.
Some of the components found in the Hummer H1 are similar to those in its HMMWV sibling, including the axles, frame, body panels, and brakes. There are also a number of things about the H1 that are unique, including the way it handles off-road as well as their interior arrangement. These vehicles are known for being incredibly stable because of their wide track. The H1 models have multiple features that can be considered unique, including their inboard brakes as well as the portal gears which allow for a higher placement for the drivetrain’s half shafts.
The Hummer H1 Alpha came out onto the market in 2006 and was a completely re-engineered version of the H1, equipped with GM’S Duramax Diesel and a 5-speed Allison transmission. The previous version of the H1 that had the 6.5 liter “Optimizer” turbo-diesel engine did not do very well in terms of overall sales, and its lack of power was one of the primary complaints that consumers and critics had. The overall power and handling of the subsequent Hummers were therefore increased and improved in order to meet the needs of the public. There are many different unique things about this vehicle and it continues to be popular even today, although not in its original form.