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To disable the seat belt alarm on a Chevy Colorado, locate the alarm fuse. Pull out the fuse to disable the alarm.
The easiest way to disable the 1998 Chevy Lumina factory alarm is to remove the factory alarm fuse. The factory alarm fuse can be found in the fuse box.
The problem is in the alarm. If it is GM take it to the dealer.
Go to seat belt alarm stop.com
take it to a Chevy place
pull fuse out in fuse box
It is an alarm to alert someone or something that the power is no longer working.
On my 99 Suburban, the alarm activates when you press the lock button on the remote twice.
It means it works Security alarm
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Try disconnecting and re-connecting the battery cable.
Try sledgehammering the battery.