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turn key every thing shuts off headlight are bright and stay on will not crank battery is good all connections are clean
Starter relay could be at issue, also solenoid and starter itself.
You could have an alarm issue, if equipped.
You could have an ignition switch issue.
HAVE YOUR STARTER CHECKED
Q&A > Buick > 1993 Buick LeSabre
Q&A > Buick > 2000 Buick LeSabre
Q&A > Buick > 1994 Buick LeSabre
Q&A > Buick > 2001 Buick LeSabre