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GMC Forum: Security system horn issue
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Old 11-02-2018, 10:26 AM
12GMCanyon 12GMCanyon is offline
Junior Member
Drives a GMC Truck
Join Date: Nov 2018
Location: central OH
Posts: 3
Default Security system horn issue

I'm Ben, newbie from central OH. I own a 2012 Canyon off road 4x4 crew with only 50k miles on. Real beauty. Recently my security system has an odd issue where my horn doesn't work anymore. Horn fuse is fine as I swapped same amp fuse with tail lights that work so I know the fuse is not the prob. To be as brief as possible the issue began as I was setting in the truck waiting in parking lot playing radio and having the ignition key in aux position. I realize the radio plays without that. Anyway I noticed interior cabin light begin to blink and some clicking. I thought little of it until later when I tried locking the truck with my remote I could hear the locks click but no horn beep. The horn had been working fine up until that time and I cannot imagine the horn just suddenly failing especially when it was working fine moments before. Everything works and performs as it should but when trying the panic alarm button, no horn.....just the lights flash. The horn is the only issue but I am suspicious as it seems to have happened right after the blinking interior light?? Could this be security system related? Not having a horn is not good. Is there a relay involved? Any suggestions or advice is appreciated.
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