Question about 1997 Buick LeSabre
Car can be sitting all day with Alarm System activated, out of the blue alarm will sound complete with lights and horn.
I had the same problem. The alarm system on my 1997 Le Sabre self-actuates. Luckily, it went off once when I popped the trunk. I went to Auto Zone and bought a generic trunk replacement lock. I noticed the original lock had a funky push-pull type of switch used to activate the alarm. This switch was likely hair-line on/off and when the temperature changed, it activated.
I went ahead and replaced the lock without the switch, but you can try simply unplugging the switch through the hole in the metal behind the lock to see if that might stop the alarm from arming itself (or cut the wire).
Good luck, it's a "hairy" problem.
Posted on Jun 14, 2009
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Posted on Jan 02, 2017
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