The EMD GP20C-ECO is a 2,000-horsepower (1,500 kW) B-Bdiesel-electric locomotive built by EMD. Although similar to the EMD GP22ECO, the GP20C-ECO follows Canadian Pacific's request for crashworthiness and EPAemission standards with the "C" in the designation denoting crashworthiness of the cab, frame, and fuel tank. Canadian Pacific (CP) requested relaxed emission standards (Tier 0+ instead of Tier 2) to cut costs.
GP20C-ECOs use just enough rebuilt components to designate them a rebuild. The GP20C-ECOs feature a new frame, fuel tank, long hood, and cab with CP providing trucks, and alternator (along with many other smaller components), mainly from retired CP GP9s, that are rebuilt and reused in the locomotives. The units resemble a GP60's long hood and feature a snoot nose, which set the cab back slightly on the frame to make room for the additional length. As with the SD30C-ECOs, the GP20C-ECOs have all-LED lighting with the exception of the headlights and ditch lights.
The GP20C-ECOs should not be confused with a limited number of "GP20C" locomotives. These were former Great Northern GP20s rebuilt by Ziegler in 1989 (Ziegler was a Minneapolis-based Caterpillar dealer). The C in the name referred to their new Caterpillar engines. Only ten of these locomotives were produced.
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