PC 3169:
This loco was built in 10/1968 with EMD serial number 34346. She was built as a freight roadswitcher, model GP40.
She became CR 3169.
She was leased by the Rio Grande on 12/03/1983 and given temporary number D&RGW 3169, as her PC/CR number would have conflicted with newly-delivered D&RGW GP40-2's.
She was acquired outright on 01/04/1985 and given her permanent number D&RGW 3153. She was not equipped with gyralights in service for the PC/CR and they were never retrofitted during her service for the Rio Grande.
Note that she was the second unit to wear the number D&RGW 3153 (as a permanent number.) The first unit to wear that number (as a temporary lease number) was originally PC/CR 3153 and then D&RGW 3142 as her permanent number.