Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
is the horn beeping ?
does the truck start up and run ?
the factory alarm will just beep the horn when the remotes set the alarm
is that the alarm you are trying to disable ?
the passive alarm is built into the BCM and there is no way to disarm or shut it off unless the BCM is sent out and programmed by an aftermarket programmer to remove that system out of the BCM but when that is done the remotes will not work anymore
i have seen after market systems added to these trucks but never have seen one to remove or disable the stock system since it is all run by the BCM
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you can cut the horn wire from the BCM to the horn relay that will stop the horn from beeping but not the lights from blinking
the black wire from the BCM
no like i said it is all run through the BCM
I just talked to a friend / coworker of mine and one quick way to get that system off would be to send out that BCM to a programmer and have them reprogram the BCM with a NO passive alarm feature so it will be off
there are many if you do a quick search online