After several visits, they finally determined that the radio system, which was cutting out intermittently, was not accepting updates, and needed to be replaced, which they did. They could not replicate a humming noise from the drivers seat, even though it was noted by the shop foreman noted the noise during diagnosis during an previous appointment. They said it was not unusually loud. They did put some sound dampening around a motor in the drivers seat, but we can still hear the noise. It somewhat defeats the purpose of engineering a quiet cab enclosure when the noise of the inside motors become annoying. At any rate, they did replace the radio, and provided a free loaner since the parts needed to be ordered, and took several days to arrive and install. Since we live in the loop (about an hour away), they were kind enough to have the car delivered and pick up the loaner. I must say they were very cooperative and went out of their way to provide the best service they could. I was very satisfied with their efforts.
Gerard P. Hand