I have my truck serviced by the local Kenworth dealer. He gave me a card for their roadside assistance service. I keep it in the truck so don't have it home with me, sorry. Their service has no annual fees. Just a 800 number you call and they'll get you the help you need. Fortunately I haven't had to use it yet.
'03 Freightliner FL112, 295" wheel base, with '03 United Specialties 26' living quarters, single screw, Cat C12 430 h/p 1650 torque, Eaton 10speed , 3.42 rear axle ratio