The EMD GM GT18LC-2 diesel electric locomotive

Diesel locomotive

A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...

 was introduced by Electro-Motive Diesel as a export model switcher in the 1970s. The prototype model spent its life at the General Motors

General Motors

General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...

 plant in London, Ontario

London, Ontario

London is a city in Southwestern Ontario, Canada, situated along the Quebec City – Windsor Corridor. The city has a population of 352,395, and the metropolitan area has a population of 457,720, according to the 2006 Canadian census; the metro population in 2009 was estimated at 489,274. The city...

 and inspired sales to Egypt

Egypt

Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

 (which then canceled their order) and later Malaysia's Keretapi Tanah Melayu

Keretapi Tanah Melayu

Keretapi Tanah Melayu Berhad or Malayan Railways Limited is the main rail operator in Peninsular Malaysia. The railway system dates back to the British colonial era, when it was first built to transport tin...

 (KTM) in 1980 where it was designated KTM Class 25. KTM had been facing a shortage of shunters at that time. The prototype was eventually sold with another eleven more units to KTM in 1990 and after seeing the locomotives' reliability, placed a second order of five locomotives which arrived in 2002.

Original Owners

Railroad	Quantity	Works No.	Local Designation	Numbers	Notes
General Motors General Motors General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...	1			GT18LC-2	Sold
Keretapi Tanah Melayu Keretapi Tanah Melayu Keretapi Tanah Melayu Berhad or Malayan Railways Limited is the main rail operator in Peninsular Malaysia. The railway system dates back to the British colonial era, when it was first built to transport tin...	12		Class 25/1	25101-25112	Delivered 1990, All in active service.
Keretapi Tanah Melayu Keretapi Tanah Melayu Keretapi Tanah Melayu Berhad or Malayan Railways Limited is the main rail operator in Peninsular Malaysia. The railway system dates back to the British colonial era, when it was first built to transport tin...	5		Class 25/2	25201-25205	Delivered 2002, All in active service.