UP an diesel locomotive. Builder General Motors Electro-Motive Division (GM-EMD)Model SD40-2AAR wheel arr. C-CDriver size 40 in (1.02 m) diameterWheelbase 43 ft 6 in (13.3 m) between bolsters; 13 ft 7 in (4.1 m) between axles in each truckLength 68 ft 10 in (21.0 m) over the coupler pulling facesWidth 10 ft 3 in (3.13 m) over the grabironsHeight 15 ft 7 in (4.75 m)Total weight 368. 000 lb (167. 000 kg)Power output 3. 000 hp (2. 240 kW) UP is still in the Southern Pacific colors, except for the locomotive number itself. Sitting idle at the San Luis Obispo Amtrak station. 4 June 2008.