Trucks: B-B Flexicoil
Engine: 12-567, 1,200 hp.
Gear ratio: 62:15
Maximum speed: 65mph
Operating weight (lbs.): 247,740
Tractive effort (lbs.): 35,000
Length: 44′ – 5″
Order no. 4437
| Road no. | Class | Build date | Builder’s no. | Retired | Notes / disposition |
| 1509 | GR-12i | Apr 57 | 22827 | 1989 | Originally CV, reassigned to GTW. To Ellis & Eastern (Sioux Falls, SD) No. 1509, re# No. 7 |
| 1510 | GR-12i | Apr 57 | 22828 | 1989 | Originally CV, reassigned to GTW To Warren & Saline River (Warren, AR), to Rinker Materials (Pennsuco, FL) No. 87-09 (86589) |
| 1511 | GR-12za | Mar 60 | 25743 | 1989 | Originally CV, reassigned to GTW To Arkansas Eastman (Batesville, AR) No. 5, re# No. 103, to Vidal Industrial Park (Sarnia, ON) No. 1511 Apr 08 |
| 1512 | GR-12za | Mar 60 | 25744 | Jun 3 96 | To Coe Rail (Walled Lake, MI), To West Michigan Railroad No. 1512 |
| 1513 | GR-12za | Mar 60 | 25745 | Jun 26 97 | To CANAC 1997 |
| 1514 | GR-12za | Mar 60 | 25746 | Feb 5 98 | To CANAC 1997, to Burlington Junction No. 1514 |
| 1515 | GR-12za | Mar 60 | 25747 | Feb 5 98 | To CANAC 1997 |
| 1516 | GR-12za | Mar 60 | 25748 | Jun 3 96 | To DOT Rail Switching (Battle Creek, MI) DRSX No. 1203 |
| 1517 | GR-12za | Mar 60 | 25749 | Feb 5 98 | To CANAC 1997, To Larry’s Truck Electric No. 1209 |
| 1518 | GR-12za | Mar 60 | 25750 | Jun 9 97 | To CANAC 1997, leased to Rouge Steel |
| 1519 | GR-12za | Mar 60 | 25751 | Jun 9 97 | To CANAC 1997, leased to Rouge Steel |