CN GMD YBU-4 Nos. 451 – 462

12 units – built by GMD – zero hp, no engine, requires an electrical connection from a locomotive to provide electrical current for the traction motors

Four axle Blomberg trucks

Operating weight – 258,000 lbs.

Continuous tractive effort – 49,000 lbs.

Nos. 451 – 454, 456 – 460 and 462 were renumbered after they were modified to work with 7200 series GP9RMs. Nos. 455 and 461 were renumbered after they were modified to work with SW1200RS Nos. 425 and 426.

Road Number	Class	Build date	Builder’s number	Renumbered to	Renumbering date
451	GY-00a	Jul 80	A3863	205	May 7 86
452	GY-00a	Jul 80	A3864	206	c. 1986
453	GY-00a	Jul 80	A3865	207	Apr 25 86
454	GY-00a	Jul 80	A3866	523	c. 1986
455	GY-00a	Jul 80	A3867	208	Aug 24 86
456	GY-00a	Jul 80	A3868	209	Sep 19 86
457	GY-00a	Jul 80	A3869	204	Apr 16 86
458	GY-00a	Jul 80	A3870	200	Sep 26 85
459	GY-00a	Jul 80	A3871	201	Oct 2 85
460	GY-00a	Jul 80	A3872	202	Oct 10 85
461	GY-00a	Jul 80	A3873	524	Nov 5 85
462	GY-00a	Aug 80	A3874	203	Nov 5 85