GTW 4701:
This loco was built in 2/1960 with EMD serial number 25733. She was built as a freight roadswitcher, model GP18 with a high hood, winterization hatch, no dynamic brakes and setup for long hood forward operation.
She became RE 1622 with a chopped front hood at some point.
She became RLCX 1622.
She became GMTX 600.