My dealer called me today for a Rapid Response Recall on my 600. He said this recall is to important for the regular mail recall route. SOME 600s, they are not sure which ones, may have a cooling system problem ... that could cause a rapid loss of coolant. It may have to do with the block heater installation. The dealer needs the truck for an overnighte cooling system pressure check. They have to do a cold morning start, then go thru various throttle positions ending up with a burst at full throttle. Again this is NOT ALL 600s but, DC don't know which ones are affected.
Jim
Jim