Don's Truck Service in Cookeville is one of the few diesel truck service centers that carry a wide selection of truck parts. They are a little expensive compared to the larger truck centers located in larger cities. But, if you need work done locally they are the guys to call. They do good quality truck service, maintenance and repair. You can usually drop off your truck and pick up when they tell you it will be ready. They are the only Volvo authorized repair center I have found in this area. They also have 24 hour road service.