The Terex 33-19 "Titan" was a prototype off-highway, ultra class, rigid frame, three-axle, diesel/AC electric powertrain haul truck designed by the Terex Division of General Motors and assembled at General Motors Diesel Division's London, ON, Canada assembly plant in 1973.

General Motors developed the Titan in response to the need for more efficient haul trucks by open pit mine operators.

[2] Terex put the Titan into service with Kaiser Steel at its iron mine at Eagle Mountain, California, in January 1975.

[7][8] The Titan experienced frequent downtime, but hauled approximately 3.5 million tons of earth over the course of its four years of service at the Eagle Mountain mine.

During Westar Mining's ownership, the Titan had an uptime rate of more than 70% and regularly hauled loads exceeding 350 short tons (320 t).

The Sparwood, British Columbia Chamber of Commerce completed a fund raising effort, restored the Titan, and promotes it as a tourist attraction.

The Titan played a starring role in a 1977 Terex television commercial [11] alongside golfing great Jack Nicklaus.