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the contact wires under the driver side airbag may be stuck
Because its a 1988 Buick LeSabre
what can cause a 2002 buick lesabre to not crank
Illustrate how to jump start a 2004 buick lesabre
I also have the same issue with my 1995 Buick Lesabre. It started happening when I overcharged the battery and now the horn goes off at 2am, 6am, and all hours. I have had to disconnect it at both horns under the hood.
If you lights do not dim when turning key, then probably your starter.
car stalls backfires hard to start
it sounds like your neutral safety switch
start by changing the thermostat
check igntion coils
fuel pressure injector pulse idle air control motor
Bad key or ignition switch