484 spent the winter of 1966-67 in Durango. It went east on the first freight on June 12, 1967 and worked through to Alamosa. It worked to Chama on June 21-22 and 29-30, then was parked for the remainder of 1967.
484 got called to work with 483 on the last westbound revenue freight out of Alamosa on August 28. It worked as helper the next day with 498, then ran light to Alamosa, ending its D&RGW service.
November 30, 1966 was however the last time 488 ran under D&RGW ownership. It didn't run again until June of 1979.