Not to be confused with the EMD GP28M, a rebuild of the 
EMD GP9.
| EMD GP28 | 
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 | Power output | 1,800 hp (1.34 MW) | 
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 An EMD GP28 is a 4-axle diesel-electric locomotive built by General Motors Electro-Motive Division between March 1964 and November 1965.  Power was provided by an EMD 16-567D1 16-cylinder engine which generated 1,800 horsepower (1.34 MW). This locomotive was basically a naturally aspirated version of the EMD GP35.[1] 
16 examples of this locomotive model were built for American railroads, 10 were built for Mexican railroads, and five were built for use in Peru. 
 Original buyers
  References
   - ^ Foster, Gerald L. (1996). A field guide to trains of North America. Boston: Houghton Mifflin. p. 32. ISBN 0-395-70112-0.