Thanks, Pizza...It is very confusing...When i first purchased my 04 Crossfire i was reading everything i could find....I had a bill of repair for the rcm, then i purchased the cam and crankshaft sensors, just in case....Now more reading and i am concerned about the Skreen maladies....That is 4 points of concern for these cars....The Skreen is complicated and the more i read the more confusing it gets....Would like someone with a spare to chime in and let us know how they did it....Did they supply the spare or did they purchase a new skreen when they were plentiful...Is the ecm in the same location as the rcm? i am afraid to touch anything in that compartment....thanks, Jeff