I've seen a lot of crank shaft position sensors cause this issue in the L300's.
I'd take a look at replaceing that, if you don't have a scan tool to look at it to see if it's working ok.
But if you seem to have other issues going on at the same time like: door locks inop, can't get shifter out of park, security light flashing, dome lamp stays on.
Then it could be the body control module failing.
Let me know how you make out with that.
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Friday, March 5th, 2010 AT 2:20 PM