My 2002 Saturn L300 was doing this also, it was the BCM (Body Control Module). Cost about $600 to fix at the dealership
There are 3 different things that can cause the security lights to flash constantly on a 2002 Saturn Vue. These things are a bad passlock sensor in the ignition housing, a bad BCM, or a bad PCM.
if the light goes off it's probably the starter...
the computer tells it to glow.
On top of the transmission, just under the battery.
disconnect neg and pos of battery for 1 minute
134 A is used in the 2002 Saturn
Your local auto store. I use O'Rally.
Passlock sensor (Ignition housing) Or body control module fault
Have vehicle scanned to have codes cleared
How to remove the wiper motor on a 2002 Saturn sc1
2002 saturn sl200
To reset the fashing dash blue security light............disconnect the hot lead on the battery and after about 3 minutes, reconnect it. Light should be off now.