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Electro-Motive GP15 Diesels
Y542, Class GP15-1, was built in June 1976, #757142-12, FN 757142-12, as Chicago & North Western 4411. It was retired on January 10, 1992, and returned to GMAC in March 1992. In October 1993 it became California Northern 100. It was returned to GMAC in 1996 and leased as UP 1542, Class GP15-1, on March 26, 1997. It was renumbered Y542 on January 18, 2000, and retired on July 29, 2002. It was returned to Locomotive Leasing Partners as LLPX 1514 and became General American Transportation Co GMTX 415.
Y545, Class GP15-1, was built in June 1976, #757142-1, FN 757142-1, as C&NW 4400. It was assigned as UP 1545, Class GP15-1, in June 1995 and became Y545 on May 29, 2001.
Y546, Class GP15-1, was built in June 1976, #757142-2, FN 757142-2, as C&NW 4401. It was assigned as UP 1546, Class GP15-1, in June 1995 and became Y546 on October 17, 2001.
Y548, Class GP15-1, was built in June 1976, #757142-4. FN 757142-4, as C&NW 4403. It became UP 1548, Class GP15-1, on April 29, 1997, and became Y548 on November 13, 2001, It was reclassified Class GP15N in May 2018.
Y551, Class GP15-1, was built in June 1976, #757142-7, FN 757142-7, as C&NW 4406. It was assigned as UP 1551, Class GP15-1, in June 1995 and became Y551 on May 5, 2001.
Y557, Class GP15-1, was built in June 1979, 787138-3, FN 787138-3, as Chicago & Eastern Illinois 1557. It became Missouri Pacific 1557 in October 1976. It became UP 1557. Class GP15-1, on November 24, 1985, and was renumbered UPY557 on March 14, 2007.
Y558, Class GP15-1, was built in June 1979, #787138-4, FN 787138-4, as C&EI 1558. It became MP 1559 in October 1976. It became UP 1558 on September 8, 1987, and was renumbered UPY558 on April 19, 2000.
Y559, Class GP15-1, was built in June 1976, #757138-5, FN 757138-5, as C&EI 1559. It became MP 1559 in October 1976. It became UP 1559 on April 26, 1991, and was renumbered UPY559 on June 7, 2000.
Y561, Class GP15-1, was built in July 1976, #757138-7, FN 757138-7, as C&EI 1561. It became MP 1561 in October 1976. It became UP 1561 on February 19, 1988, and was renumbered UP561 on June 29, 2000.
Y563, Class GP15-1, was built in June 1976, #757138-9, FN 757138-9, as C&EI 1563. It became MP 1563 in October 1976. It became UP 1563 on April 15, 1987, and was renumbered UPY563 on May 30, 2000.
Y565, Class GP15-1, was built in July 1976, #757138-11, FN 757138-11, as C&EI 1565. It became MP 1565 in October 1976. It became UP 1565 on June 11, 1987, and was renumbered UPY565 on August 24, 2000.
Y570, GP15-1, was built in July 1976, #757138-16, FN 757138-16, as C&EI 1570. It became MP 1570 in October 1976. It became UP 1570 on July 29, 1988, and was renumbered UPY570 on September 7, 2000. It was reclassified as GP15N in May 2018.
Y571, GP15-1, was built by July 1976, #757138-17, FN 757138-17, as C&EI 1571. It became MP 1571 in October 1976. It became UP 1571 on April 7, 1989, and was renumbered UPY571 on July 1, 2000.
Y579, Class GP15-1, was built by December 1976, #767037-5, FN 767037-5, as MP 1579. It became UP 1579 on December 18, 1986, and was renumbered UPY579 on April 20, 2004.
Y580, Class GP15-1, was built in December 1976, #767037-6, FN 767037-6, as MP 1580. It became UP 1580 on July 20, 1990, and was renumbered UPY580 on October 10, 2004.
Y582, Class GP15-1, was built in December 1976, #767037-8, FN 767037-8, as MP 1582. It became UP 1582 on September 22, 1989, and renumbered UPY582 on June 20, 2000.
Y585, Class GP15-1, was built in December 1976, #767037-11, FN 767037-11, as MP 1585. It became UP 1585 on June 1, 1980, and renumbered UPY585 on April 10, 2002. It was reclassified GP15N in February 2018.
Y591, Class GP15-1, was built in July 1977, #767038-2, FN 767038-2, as MP 1591. It became UP 1591 on August 19, 1991, and renumbered UPY591 on November 15, 2000.
Y595, Class GP15-1, was built in July 1977, #767038-6, FN 767038-6, as MP 1595. It became UP 1595 on March 5, 1993, and renumbered UPY595 on December 8, 2000.
Y596, Class GP15-1, was built in July 1977, #767038-7, FN 767038-7, as MP 1596. It became UP 1596 on June 22, 1985, and renumbered UPY596 on November 24, 2000.
Y600, Class GP15-1, was built in July 1977, #767038-11, FN 767038-11, as MP 1600. It became UP 1600, Class GP15-1, on September 16, 1991, and renumbered UPY600 on May 21, 2001.
Y627, Class GP15-1, was built in September 1979, #787183-13, FN 787183-13, as MP 1627. It became UP 1627, Class GP15-1, on November 1, 1990, and was renumbered UPY627 on April 5, 2001.
Y628, Class GP15-1, was built in September 1979, #787163-14, FN 787163-14, as MP 1628, It became UP 1628, Class GP15-1, on October 5, 1989, and was renumbered UPY628 on May 20, 2002.
Y641, Class GP15-1, was built in October 1979, #787183-27, FN 787183-27, as MP 1641. It became UP 1641, Class GP15-1. on May 19, 1980, and was renumbered UPY641 on January 31, 2000. It was reclassified as Class GP15N in May 2018.
Y655, Class GP15-1, was built in August 1981, #807019-11, FN 807019-11, as MP 1655. It became UP 1655, Class GP15-1, on July 14, 1993, and was renumbered UPY655 on July 10, 2001.
Y669, Class GP15-1, was built in February 1982, #817017-5, as MP 1669. It became UP 1669 on July 8, 1986, and was renumbered UPY669 on April 25, 2001.
Y671, Class GP15-1, was built in February 1982, #817017-7, FN 817017-7, as MP 1671. It became UP 1671 on January 23, 1986., and was renumbered UPY671 on December 12, 2001.
Y682, Class GP15-1, was built in February 1982, #817017-18, FN 817017-18, as MP 1682. It became UP 1682 on May 10, 1989, and was renumbered UPY682 on June 26, 2001.
Y684, Class GP15-1, was built in February 1982, #817017-20, FN 817017-20, as MP 1684. It became UP 1684 on March 20, 1987, and was renumbered UPY684 on September 18, 2001.
Y685, Class GP15-1, was built in February 1982, #817017-21, FN 817017-21, as MP 1685. It became UP 1685, Class GP15-1, on October 11, 1993, and was renumbered UPY685 on June 4, 2001.
Y686, Class GP15-1, was built in February 1982, #817017-22, FN 817017-22, as MP 1686. It became UP 1686, Class GP15-1. on March 25, 1987, and was renumbered UPY686 on November 27, 2002.
Y687, Class GP15-1, was built in February 1982, #817017-23, FN 817017-23, as MP 1687. It became UP 1687 on June 17, 1993, and was renumbered UPY687 on October 10, 2001.
Y704, Class GP15-1, was built in March 1982, #817017-40, FN 817017-40, as MP 1704. It became UP 1704 on April 10, 1987, and was renumbered UPY704 on July 17, 2001.
Y719, Class GP15AC, was built in November 1982, #827016-5, FN 827016-5, as MP 1719. It became UP 1719 on July 18, 1988, and was renumbered UPY719 on May 2, 2001.
Y723, Class GP15AC, was built in November 1982, #827016-9, FN 827016-9, as MP 1723. It became UP 1723 on August 15, 1980, and was renumbered UPY723 on May 8, 2000.
Y725, Class GP15AC, was built in November 1982, #827016-11, FN 827016-11, as MP 1725. It became UP 1725 on July 17, 1986, and was renumbered UPY725 on December 1, 2001.
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