I asked a long time ago about a tick-tock sound coming from the dash somewhere. Every 5 seconds it would tick-tock, like a turn signal flasher. I narrowed it down to definitely the passenger side, definitely electrical (not a vacuum door on the HVAC), always while ignition key was in RUN even when engine not running. Then the other day I had a break through- it tick-tocked when I opened the door, after turning off the car and sitting for a minute. Security? Not HVAC electrical for sure. I took off the lower foot panel and the glove box door, and listened. The BCM? Oh man.
Then I remembered I had taken out the fuse for the interior courtesy lights about a year ago (to save electricity for my tiny battery, to not have to have the rear view mirror lights go on or accidently get bumped on). Let me try that- HALLELUYAH. Tick tock noise stopped immediately. So, if that fuse burns out or you take it out, you get that annoying sound like a flasher or slowly going bad relay.
Nice! Those are the tricky ones to find.
Good call, thanks for heads up....that kind of stuff bugs the hell outta me lol..
The guy in this video was having the same problem with his '95 C1500. It was driving him nuts! TICK-TOCK! TICK-TOCK! You can see how he solved it.
https://www.youtube.com/watch?v=QcHvzNBtlOw
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