Conrail inherited their fleet of ten U30C's from the Penn Central (former Pennsylvania Railroad units) and the Reading Company. The U30C would be the only GE locomotives the Reading had on their roster. In 1976, Conrail assigned their U30C's to series CR 6535-6539 for the former PC units and to series CR 6579-6583 for the former RDG units. In October 1979, Conrail renumbered all the U30C's into series CR 6835-6844 to make way for the newly arriving C30-7A's.

Comprehensive GE U30C Roster

The roster below is comprehensive for Conrail's U30C when they arrived on Conrail from the Reading Company and Penn Central. All ten units were retired on July 28, 1982 and sold to the Chicago & Northwestern Railroad, which never operated them. Instead, the CN&W traded them into GE in October 1989 for credit. The Reading Company Technical & Historical Society rescued RDG 6300 (former CR 6840) in 1991 and partially restored it fully restored it cosmetically; however, it remains out of service as of 2019.

                                               Builder's
CR #   Former    Prior      Previous   Built   Number     Removed      
==================================================================
6835   CR 6535    PC 6535   PRR 6535   01/67   36096      07/28/82
6836   CR 6536    PC 6536   PRR 6536   01/67   36097      07/28/82
6837   CR 6537    PC 6537   PRR 6537   01/67   36098      07/28/82
6838   CR 6538    PC 6538   PRR 6538   01/67   36099      07/28/82
6839   CR 6539    PC 6539   PRR 6539   01/67   36100      07/28/82
6840   CR 6579   RDG 6300   --------   06/97   36318      07/28/82
6841   CR 6580   RDG 6301   --------   06/97   36319      07/28/82
6842   CR 6581   RDG 6302   --------   06/97   36320      07/28/82
6843   CR 6582   RDG 6303   --------   07/97   36321      07/28/82
6844   CR 6583   RDG 6304   --------   07/97   36322      07/28/82