Originally Posted by pizzaguy

DO what I did. Order the part Deepsea21 showed you. AT THE SAME TIME, yank the RCM from the car and ship it to DJ Tighe for rebuilding.
THAT way, you have a spare for the NEXT time this happens. That is what I did, not a month ago, when mine failed.

You can PROVE it's the RCM, do this:
Turn key to START, if the car does NOTHING, let the key return to "ON" and wait 45 seconds.
Do you hear the engine cooling fan warp up to high speed? IF so, the RCM is bad - 100% certainty.
If the fan does not warp up to high speed, we have something else at fault.