X,
Go to the FreightLiner web site and look up their dealer locator/network. There are hundreds of FreightLiner Dealers out there that can service your coach, just make sure they are also a Cummins authorized dealer if you have any major engine work to be done.
If you haven't already experienced the cost of servicing a diesel chassis, your in for a big surprise, it's expensive!!!
I would determin what work I needed before I went to any dealer and then get a written qoute for the work you want done. Then ask around at different dealers to see where you get the best deal. Sometimes the small independent dealers who service heavy vehicles, will service motor homes and do good job at a very reasonable rate.
If you only have 6000 miles on your coach, your in for a lot of service work according to the owners manual, related to scheduled maintenance. Cummins and FreightLiner both, post their maintenance schedules for their products at their web sites.
Tomcat F15