General Motors SWMT
CSX 1038-1050
Active

General Motors SW1500
CSX 1100-1129
Active

General Motors MP15AC
CSX 1130-1139, 1150-1194
Active

General Motors MP15
CSX 1140-1149
Active

General Motors MP15T
CSX 1200-1241
Active

General Motors Mother Unit
GP38 or GP39
Active

General Motors SW1200
CSX 9615-9621
Retired

General Motors SW9
CSX 9637,9638,9639,9646,9647,9664
Retired

General Motors SW7
CSX 9676
Retired

Ranges from 1987 to 1993 do not include engines retired, sold, or wrecked.