Commonwealth Railways GM class

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Commonwealth Railways GM class
Aurizon GM class locomotive leading a freight train in January 2025
Type and origin Power type Diesel-electric Builder Clyde Engineering, Granville Model Electro-Motive Diesel ML1, later model A16C Build date 1951-1967 Total produced 47
Specifications Configuration: ​  • UIC GM1-11 A1A-A1A GM12-47 Co-Co Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Fuel type Diesel Engine type V16 Cylinders 16
Performance figures Power output GM1-11 1,119 kW (1,501 hp), GM12-47 1,305 kW (1,750 hp)
Career Operators Commonwealth Railways Number in class 47 Numbers GM1-GM47 Delivered 1951 First run September 1951 Last run December 1967 Preserved GM1, GM2, GM28, GM36 Current owner Aurizon Southern Shorthaul Railroad Disposition 6 in service, 2 preserved, 11 stored, 28 scrapped

The GM class are a class of diesel locomotives built by Clyde Engineering, Granville for the Commonwealth Railways in several batches between 1951 and 1967. As of January 2014, some remain in service with Aurizon and Southern Shorthaul Railroad.