| 1 | PTEX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 2 | PTEX | General Electric Railcar Services Corp. | added 1/1984; 1/1994; eliminated 1/2000 | | NAKINA |
| 3 | PTEX | North American Car Corp. | added 1/1976; 1/1980; eliminated 1/1984 | | NAKINA |
| 4 | PTEX | North American Car (Canada) Ltd. | added 1/1975; 1/1975; eliminated 1/1976 | | NAKINA |
| 5 | PTEX | North American Car (Canada) Ltd. | added 1/75; 1/75 | | NRHS |
| 6 | PTEX | North American Car Corp. | Jan-80 | | NRHS |
| 7 | PTEX | General Electric Railcar Services Corp. | 1/94; eliminated 1/2000 | | NRHS |
| 8 | PTEX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 9 | PTEX | *CANPOTEX | | | PWRC |
| 10 | PTEX | +(NATX) GENERAL ELECTRIC RAIL SERVICES CORPORATION | | | PWRC |
| 11 | PTEX | Canpotex | | | RSRV |
| 12 | PTEX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 13 | PTEX | North American Car Corp. | | USA | TRAFFIC |
