GP15-1/15AC/15T

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Contents 1 GP15-1 2 Roster of GP15-1's 3 GP15AC 4 GP15T

GP15-1

The Electromotive Division GP15-1 is a 4 axle, 1,500 HP diesel-electric locomotive built by EMD from 1976 to 1982. It uses a 12 cylinder 645E prime mover rated at 1,500 HP. Offered as a light road or yard switcher, the GP15-1 was built from many components of older locomotives that railroads traded to EMD in exchange for new GP15-1's. Though they aren't "Tunnel Motors" like the SD40T-2 and SD45T-2, the GP15-1's have a small radiator located on the lower rear of the longhood, thus being nicknamed "Baby Tunnel Motors". 310 units were built, and many GP15-1's can still be found in service today on Class 1 railroads, shortlines, and in lease fleets.

Roster of GP15-1's

	Railroad Quantity Road Numbers Notes Chicago & North Western 25 4400-4424 Now UP Conrail 100 1600-1699 Split between CSX and NS, NS sold off their fleet in 2007 Missouri Pacific 160 1555-1714 To UP, most now UPY St. Louis San Francisco 25 100-124 To BN, now BNSF

GP15AC

The GP15AC is a variant of the GP15 built by EMD for Missouri Pacific in 1982. 34 (30 for MoPAC, 4 for export to Venezuela) were built, differing only from regular GP15-1's in that the GP15AC used a new AR10 AC alternator instead of the rebuilt D32 DC ones. Most continue to work for UP today as UPY units. Picture of UPY 739, an ex MoPAC GP15AC

GP15T

The GP15T is another variant of the GP15 built by EMD from 1982 to 1983. The GP15T uses a turbocharged 8 cylinder 645 prime mover rated at 1,500 HP, versus the GP15-1 and AC's 12 cylinder non turbocharged one. Marketed as a more fuel efficient GP15 (EMD built MP15T switchers using the same technology at the time), 28 GP15T's were built. C&O got 25 units, while 3 went to the Apalachicola Northern. C&O's were equipped with dynamic brakes, and continue to work for CSX. Picture of CSX 1507, an ex C&O GP15T

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