I've got a 360 Prairie 4x4 and the 2wd/4wd light is flashing at 1 second intervals. The manual says the K-EBC actuator is malfunctioning. Is this a hard fix or do I have to take it in to a dealer. Also if it is something I can change, where can I order the part aside from going thru a dealer? I've checked online and can't seem to find anything related to the engine brake. Thanks