YBU-4 Nos. 200-209

10 units – these units are part of a group of 12 YBU-4 slug units, Nos. 451 – 462, built by GMD in 1980. They have no engine and draw electrical power from the locomotive they are coupled to. B-B Blomberg trucks, 258,000 lbs. operating weight, 49,000 lbs. continuous tractive effort. They were originally mated with end-cab switchers but were later mated with a 7200 series GP9RM. Nos. 208 and 209 were modified to work with hump-service units in 1990 and were renumbered to Nos. 525 and 526.

Road number	Class	Built	Builder’s number	Original road number	Renumbering date	Third road number	Renumbering date	Retired	Notes
200	GY-00b	Jul 80	A3870	458	85 – 86
201	GY-00b	Jul 80	A3871	459	85 – 86				Sold to Larry’s Truck Electric (McDonald OH) 2013
202	GY-00b	Jul 80	A3872	460	85 – 86			Jan 2013
203	GY-00b	Aug 80	A3874	462	85 – 86
204	GY-00b	Aug 80	A3869	457	85 – 86
205	GY-00b	Aug 80	A3863	451	85 – 86
206	GY-00b	Aug 80	A3864	452	85 – 86
207	GY-00b	Aug 80	A3865	453	85 -86			2013	Unretired in 2015
208	GY-00b	Jul 80	A3867	455	85 – 86	525	Nov 90
209	GY-00b	Jul 80	A3868	456	86 – 86	526	Nov 90
211	GY-00c	from GP9 4492 in 1986						2013
212	GY-00c	from GP9 4375							GP9 slug converted by Pointe St Charles shops in Montreal usually operates with GP9 72xx series mother
Number	Class	Built			Renumbered			Retired	Notes
213	GY-00c	from GP9 4473 in 1986							GP9 slug converted by Pointe St Charles shops in Montreal usually operates with GP9 72xx series mother
214	GY-00c	from GP9 4489 in 1986						July 10 2007	GP9 slug converted by Pointe St Charles shops in Montreal usually operates with GP9 72xx series mother
215	GY-00d	from GP9 4395 in 1986						May 9 2007	usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
216	GY-00d	from GP9 4210 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
217	GY-00d	from GP9 4215 in 1986						2013	usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
218	GY-00d	from GP9 4372 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
219	GY-00d	from GP9 4499 in 1986						June 2012	usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
220	GY-00d	from GP9 4245 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
221	GY-00d	from GP9 4334 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
222	GY-00d	from GP9 4300 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
223	GY-00d	from GP9 4362 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
224	GY-00d	from GP9 4367 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
Number	Class	Built			Renumbered			Retired	Notes
225	GY-00d	from GP9 4274 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
226	GY-00d	from GP9 4275 in 1986						October 19 2009	usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
227	GY-00d	from GP9 4238 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
228	GY-00d	from GP9 4320 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
229	GY-00d	from GP9 4271 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
230	GY-00d	from GP9 4306 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
231	GY-00d	from GP9 4337 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
232	GY-00d	from GP9 4352 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
233	GY-00e	from GP9 4370 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
234	GY-00e	from GP9 4414in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
235	GY-00e	from GP9 4368 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
236	GY-00e	from GP9 4382 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
237	GY-00e	from GP9 4383 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
238	GY-00e	from GP9 4578 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
239	GY-00e	from GP9 4587 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
240	GY-00e	from GP9 4364 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal
241	GY-00e	from GP9 4505 in 1986							usually operates with GP9 72xx series mother converted by Pointe St Charles shops in Montreal