PC 3156:
This loco was built in 9/1968 with EMD serial number 34333. She was built as a freight roadswitcher, model GP40.
She became CR 3156 at the formation of Conrail.
She was leased by the Rio Grande on 11/21/1983 and given temporary number D&RGW 3156, as her PC/CR number would have conflicted with newly-delivered D&RGW GP40-2's.
She was acquired outright on 04/18/1984 and given her permanent number D&RGW 3144. She was not equipped with gyralights in service for the PC/CR and they were never retrofitted during her service for the Rio Grande.
She became EIRR 3144.
She was rebuilt as a GP40-3 and became FEC 448.