GMD GMD1

The GMD GMD1 is a diesel road switcher locomotive built in Canada by General Motors Diesel, the Canadian subsidiary of the General Motors Electro-Motive Division, between August 1958 and April 1960. It is powered by a 12-cylinder EMD 567C diesel engine rated at 1,200 horsepower, about 890 kilowatts. Two truck designs were used: Flexicoil A1A-A1A trucks for light prairie branch lines, and Flexicoil B-B trucks. Of the 101 units built, Canadian National bought 96 and Northern Alberta Railways took the other five, which passed to CN when it gained majority control of that railway. As the light branches were abandoned or rebuilt, most units received new fuel tanks and B-B trucks and moved into yard and transfer work. In 1988 and 1989 Canadian National rebuilt 39 of them as GMD 1U units. CN retired its last GMD1 from revenue service on 19 April 2021.