As of the Spring Semester of 1972 came to a close the Campus Bus Service realized that their service was soon going to exceed their fleet capability. In addition to their aging fleet of TDH4512's they had been renting 4 other buses from local transit systems for the last 3 years. The decision had been made to purchase new buses. This was going to be their single largest fleet purchase since the original buses had been bought at the start of CBS. An order was placed in the summer of 1972 with GMC for 8 new T6H4523A coaches. By the end of the year, CBS took delivery of the all 8 buses with their initial entry into service beginning with the Spring Semester of 1973. This order became known as the 60 Series with the unit numbers ranging from 6138 to 6838.

Unit Number Breakdown
       6 = Sixth fleet
       7 = Seventh bus in purchase
       38 =Seats 38 passengers

The 60 Series remained in operation until the mid-80's when they were all removed from service to be refurbished. The only exception to this was Unit 6338 which was on loan to Flxible for an evaluation program they were running. In refurbishment, the 60 Series were given cloth seats and wall covering, an electrically controlled air actuated shifter for the transmission, a Firestone Safety Bumper to replace the water bumper and a new paint job. The original all blue livery was replaced with a black over gray coloring.

Unit 67 remained in service uneventfully through out the 1970's, 80's, 90's and into the 00's. The 60 Series started to be phased out in 2002 as the age of the fleet and American Disabilities Act requirements for a wheelchair lift became too costly. Unit 61 and 67 became the last 2 remaining buses of the 60 Series. As the 2002 Fall Semester approached, CBS decided to use one of the last GMC buses as the body for the upcoming Homecoming float. Unit 61 became victim for the float and was chopped up. Unit 67 was now the last 35' GMC bus at CBS with the 40' Unit 3741 being the only other GMC bus left. The year 2002 also brought the 35th Anniversary of the Campus Bus Service. At the alumni weekend events we became aware of the elimination of the GMC's from the CBS fleet and that Unit's 37 and 67 were the last remaining buses. Both Todd and I expressed interest in the remaining buses and asked to be put on the request list for bid packets when the buses went to auction.

Bids for both buses closed on November 20th, 2002 and Todd and I were the high bidders for our respective buses. On December 4th, 2002 I took delivery of Unit 6738. At CBS, Unit 67 had spent 30 years and over 500,000 miles on the road. It was the end of an era.