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. 4376 (Nos. 1509, 1510) 4437 (Nos. 1511 – 1519)
For more information see CN Lines Volume 2, Number 3, page 9 – The GTW / CV Fifteen Hundreds (Compiled by Mike Christian)
| Road no. | Class | Build date | Builder’s no. | Retired | Notes / disposition |
| 1509 | GR-12i | Apr 57 | 22827 | 1989 | To CV Dec 26 62, repainted CV c. Jan 69, returned to GTW Nov 30 88, to Ellis & Eastern (Sioux Falls, SD) No. 1509, re# No. 7 |
| 1510 | GR-12i | Apr 57 | 22828 | 1989 | To CV Jan 2 63, repainted CV c. Jan 69, returned to GTW Nov 30 88, to Helm Leasing Jan 89, to Warren & Saline River (Warren, AR) Feb 89, to Rinker Materials (Pennsuco, FL) No. 87-09 (86589) |
| 1511 | GR-12za | Mar 60 | 25743 | 1989 | To Arkansas Eastman (Batesville, AR) No. 5, re# No. 103, to Vidal Industrial Park (Sarnia, ON) VIPX No. 1511 Apr 08 (painted blue with white stripe, VIP on hood), in service 2009 |
| 1512 | GR-12za | Mar 60 | 25744 | Jun 3 96 | To Coe Rail (Walled Lake, MI) (painted black, still here Jan 2010), to Michigan Air-Line Rwy. (successor to Coe Rail, painted red & silver, in service Oct 2011), to AB Rail Investments Inc. ABRX No. 1512 by 2012, to Great Lakes Locomotive GLLX No. 1512 by 2005 (lettered for West Michigan Railroad (still on WM May 2025) |
| 1513 | GR-12za | Mar 60 | 25745 | Jun 26 97 | To CANAC 1997 as CANX No. 1513 (painted black and cab profile lowered, in service on Burlington Junction Rwy. since at least 2009), converted to slug, engine block removed and replaced with steel ballast plates c. July 2013 at BJRY Burlington IA), to BJRY No. 1513B, in service June 2025 |
| 1514 | GR-12za | Mar 60 | 25746 | Feb 5 98 | To CANAC 1997 as CANX No. 1513, cab roof profile lowered, (derelict on BJRY Burlington IA Aug 31 2009), to Burlington Junction No. 1514 (painted BJRY red & black, in service Sep 2020 |
| 1515 | GR-12za | Mar 60 | 25747 | Feb 5 98 | To CANAC 1997 as CANX No. 1515, cab roof profile lowered (painted black), to JLCX No. 1515 (with Lambton Diesel Service lettering at Sarnia ON Jun 2020) |
| 1516 | GR-12za | Mar 60 | 25748 | Jun 3 96 | To DOT Rail Switching (Battle Creek, MI) DRSX No. 1203, to RJ Corman RJCR No. 1203 by July 2023, in service Oct 2024 |
| 1517 | GR-12za | Mar 60 | 25749 | Feb 5 98 | To CANAC 1997 as CANX No. 1517, cab profile lowered, painted CN orange & black, To Larry’s Truck Electric LTEX No. 1209 by July 2013, painted LTEX red & grey by Nov 2014, at Lordstown OH July 2025 |
| 1518 | GR-12za | Mar 60 | 25750 | Jun 9 97 | To CANAC 1997 as CANX No. 1518 (cab roof profile lowered and painted black), to Savage SVGX No. 1518 by Oct 2015 (painted Savage blue/orange), in service Oct 2024 |
| 1519 | GR-12za | Mar 60 | 25751 | Jun 9 97 | To CANAC 1997 as CANX No. 1519, To Savage SVGX No. 1519 Apr 30 2004 |