The Hummer H1 is based on the Humvee, which was created by AM General.

Originally released in the civilian market in 1992, the Hummer H1 owes its birth to the popularity of photos from Operation Desert Storm and the enthusiastic campaign from California Governor Arnold Schwarzenegger, who personally owns several variants of Hummer vehicles.

The Hummer H1 has three common variants - a convertible-like Soft Top, a 4 door Hard Top pickup truck, and a station wagon body version. Other less known variants include a two door pickup truck and a 4 door slantback.

Currently, 5 engine types and three automatic transmission types can be found in Hummer H1s. The common engine/transmission combinations are:

• 6.2 L Diesel/GM TH400 3-speed 3L80
• 6.5 L Diesel/GM 4L80E 4-speed
• 5.7 L Vortec 5700 gasoline V8 TBI/GM 4L80E 4-speed
• 6.5 L turbo Diesel/GM 4L80E 4-speed
• 6.6 L Duramax LLY turbo Diesel/Allison 1000 5-speed (model year 2006)

The Hummer H1 shares some common driveline parts with its HMMWV bretheren. Items like brakes, differentials, frame, and major body panels (hood, tailgate, and quarter panels) are identical between the HMMWV and the Hummer H1. All Hummer H1s and HMMWVs come off the same first stage assembly line, and then are separated midway to either become a military HMMWV or a civilian H1.

Hummer H1s are unique in the way they handle off road. They are inherently very stable, thanks to their wide stance. They also can ford 30 inches of water, climb a 22 inch step, have a stock ground clearance of 16 inches (thanks to its design of tucking driveline components inside a channel, which subsequently intrudes into the cabin space of the vehicle), have approach/departure angles of 72/37.5 degrees, and most H1s are equipped with Central Tire Inflation System (CTIS), which enables the driver to increase or decrease the tire air pressure at will.

Hummer H1 Alpha

An extensively reengineered H1 with the Duramax Diesel.

Hummer Trivia

• In 1990, before the H1 was sold to the public, and even before Operation: Desert Storm, AM General tested two matching white H1's by entering them in the "London To Beijing Motor Challenge", a car rally otherwise consisting of vintage automobiles. The H1's performed flawlessly, traversing the rough roads and desert heat of central Asia with ease and even performing stunts like climbing sand dunes in the Gobi Desert for the amusement of local villagers. Highlights of the drive were broadcast in the United States on ESPN.
• In 2003, there were only 10,877 Hummer H1s in existence. 2004 production was scheduled to be 235 trucks.
• Crawl ratio is 35.35:1
• The Hummer H1 is a true mongrel. It uses front brake calipers from an AMC Eagle, a steering column from a Ford LTD, an ignition key set from a Ford Escort, armrests from a Jeep Cherokee, and seats from Isringhausen.
• The Hummer H1's exterior is a combination of fiberglass (for the hood), steel, and aluminum. Its body panels are bonded together with a combination of rivets, bolts, and cyanoacrylic adhesives.

See also

• Hummer
• Humvee

Sources and Links

• The Hummer Information Database
• Advanced Mobility Group Hummer Page
• Arizona Hummer Owners Group - 1992 Limited Edition Hummer History Archive
• AM General's Home Page
• Hummer.com - GM's Hummer Home Page