Ferrocarriles Argentinos, the company that managed all the railway lines in Argentina, was forced to search a local manufacturer that was able to build diesel locomotives that could be run with the Fiat engines.

The consortium was formed by the following companies: The contract committed GAIA to build 280 machines for the 280 engines previously built by Fiat.

[1] The first 80 machines were assembled in the Cometarsa (a company of Grupo Techint) workshops at Campana, Buenos Aires with all their components manufactured in Italy.

The first 130 locomotives (1300 HP) were delivered to FA in 1962 (numbered from 6201 to 6350) and sent to run on Mitre railway diesel branches (Victoria–Capilla del Señor and Villa Ballester–Zárate).

[2] State-owned FEMESA that temporarily operated the commuter rail services in Buenos Aires during the transicional period before privatisation, had also received 14 GAIA locomotives in 1992.