We put my 2004 L300 Saturn into park, shut the engine off, then realized the green light on the gear shift was still on drive even though the gear shift was on park. Car won't start back up.
http://www.saturnfans.com/forums/showthread.php?t=173939 -- there is some talk of shifter cable issues of gm cars of around the same year model of yours. I would inspect shifter cable it's probably broke or come loose some how.
Search Saturn L300 Questions
Saturn L300 Experts
Related Models For Sale
Used Saturn L-Series"
Used Saturn ION"
11 Great Deals out of 1,635 listings starting at $1,490
Used Chevrolet Impala"
902 Great Deals out of 31,735 listings starting at $1,200
Used Ford Explorer"
968 Great Deals out of 64,247 listings starting at $995