The GE U36C is a 3600 hp diesel-electric locomotive model built by GE Transportation Systems.
The length of the locomotive was , standard for U30C, U33C, U34CH, U36C, U36CG, C30-7 and C36-7. The U36C also had steel capped pistons.
218 units were produced between October 1971 and February 1975 for railroads in the United States and Mexico. A further 20 units of model U36CG (the passenger service variant of the U36C) were built for use in Mexico.
Between 1985 and 1987 Santa Fe's Cleburne shops rebuilt 70 U36Cs #8700-8769 into C30-7 standards and were reclassified as SF30Cs. As of 2022, Unit 9501 has been donated to the Arizona State Railroad Museum.
One SF30C rebuild, Minnesota Commercial #50 (ex-ATSF #9501) is owned by the Arizona State Railway Museum in Williams, Arizona.