We have lots of old threads that cover the factory content alarm system and sensitivity so try our search feature. Could be a keyfob with flaky buttons or the system just needs the sensitivity setup or adjusted. You should have an adjustable shock sensor located behind the panel left hand side of dash or you can do the procedure where you remove the MALL PGM fuse and use the headlight/parking light switch. Here are a few that may help resolve your issue.
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