1995 GMC C2500 lights flashing draining battery

1995 GMC C2500
180,000 MILES • V8 • 2WD • AUTOMATIC
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NDAMRON22
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i bought the van about a week ago and i think it has a aftermarket alarm system that doesn't work anyway when i start the fan the locks lock and unlock constantly and when they do the lights flash like hazzard lights when i kill the vehicle about five minutes later the hazzard lights start blinking and you have to start it to stop it i just keep disconnecting the battery but that is getting very annoying is there anything i can do to stop this from happening plz help me
Feb 2, 2015 at 9:44 PM
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JACOBANDNICKOLAS
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The first thing I would recommend is to remove the aftermarket security system to see if that takes care of the problem. If it doesn't, I would question the body control module (BCM).
Feb 3, 2015 at 5:13 AM
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NDAMRON22
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there are two wires that go to bcm that i have to touch together to start any solutions couldn't find the alarm module
Feb 3, 2015 at 7:15 AM
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JACOBANDNICKOLAS
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I hate to say it, but without seeing the wires or the schematic for the aftermarket security system, I don't have any recommendations.
Feb 6, 2015 at 8:51 AM
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NDAMRON22
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just dont lock the doors
it wont do it
Feb 14, 2015 at 6:49 AM