Trucks: B-B Blomberg
Engine: 16-567, 1,500 hp
Gear ratio: 62:15
Maximum speed: 65mph
Operating weight (lbs.): 246,530
Tractive effort (lbs.): 40,000
Length: 55′ – 11″
Order no. C-168, C-169
Delivered as road nos. 7555 -7578, renumbered nos. 1700 – 1723 in 1954, nos. 4350 – 4373 in 1956 and nos. 4800 – 4823 in 1957
| Road no. | Class | Build date | Builder’s no. | Retired | Notes / disposition |
| 4800 | GR-15a | Aug 53 | A534 | Jun 23 67 | Wrecked Feb 67 |
| 4801 | GR-15a | 1953 | A535 | Feb 3 72 | |
| 4802 | GR-15a | 1953 | A536 | Jun 13 75 | |
| 4803 | GR-15a | Sep 53 | A537 | May 15 75 | Used as shop switcher at Transcona MB after retirement, to Toronto Railway Museum Jul 84 |
| 4804 | GR-15a | 1953 | A538 | Jul 16 68 | Wrecked with Nos. 4819, 9108, 4113 and 20 freight cars fell through bridge weakened by fire, Bird Tail River, Rivers Subdivision Apr 23 68. Buried on site. |
| 4805 | GR-15a | 1953 | A539 | Dec 31 69 | |
| 4806 | GR-15a | 1953 | A540 | Mar 17 70 | To Mandak Metal Processing for scrap |
| 4807 | GR-15a | 1953 | A541 | May 8 69 | |
| 4808 | GR-15a | 1953 | A542 | Jun 23 67 | Wrecked Feb 67 |
| 4809 | GR-15a | 1953 | A543 | Aug 25 71 | Wrecked Aug 71 |
| 4810 | GR-15a | 1953 | A544 | Nov 1 67 | |
| 4811 | GR-15a | 1953 | A545 | Dec 7 71 | |
| 4812 | GR-15a | 1953 | A546 | Aug 25 71 | Wrecked Aug 71 |
| 4813 | GR-15a | 1953 | A547 | Feb 16 70 | |
| 4814 | GR-15a | 1953 | A548 | Nov 28 69 | |
| 4815 | GR-15a | Nov 53 | A549 | Feb 20 67 | Wrecked in collision with work extra Vanderhoof BC Mile 68.5 Nechako Subdivision Aug 3 66 |
| 4816 | GR-15a | 1953 | A550 | Feb 3 72 | |
| 4817 | GR-15a | 1953 | A551 | Aug 31 71 | |
| 4818 | GR-15a | 1953 | A552 | Feb 24 75 | |
| 4819 | GR-15a | 1953 | A553 | Jul 16 68 | Wrecked with Nos. 4804, 9108, 4113 and 20 freight cars fell through bridge weakened by fire, Bird Tail River, Rivers Subdivision Apr 23 68. Buried on site. |
| 4820 | GR-15a | 1953 | A554 | Jul 22 75 | |
| 4821 | GR-15a | 1953 | A555 | Feb 3 72 | |
| 4822 | GR-15a | 1953 | A556 | Jul 18 75 | |
| 4823 | GR-15a | Dec 53 | A557 | Jul 22 75 |