[Ryan West]

I have a 2018 Chevy Malibu LT with the 9 speaker Bose package and enjoy the 8inch stock head unit it comes with. So with that being said this car was one of the biggest pain in my *** when it came to finding wiring diagrams.

Long story short, this is the first car I’ve chose to keep the stock head unit and use an LOC (very cheap one) and it’s also my first time dealing with the problem I’ve heard called “motor boating” . When I get into my car, the dash cluster & head unit will light up for a couple seconds and my amp will turn on for about 1 min before turning off, but before it turns off the subs thump randomly. Sometimes hard, sometimes soft, sometimes multiple times in a row. I have the LOC wired to rear deck speakers, 12v into amp and at first the ground wired with amp ground but moved it to its own ground today and problem is still there. I’ve never used a stock head unit or LOC so this problem has me worried it’s damaging my subs.

 

[FAUEE]

Your remote turn on isn't right.

 

[LowBassSubs]

Put a time delay on it and forget it was an issue

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[Cisco473]

Does the sub play when you turn car off?


Sent from my iPhone using Tapatalk

 

[Mike-G]

Did your car do this before you installed the LOC? I had a similar problem with a Factory Ford system in that the Audio Control Module was bad and causing the issues with the factory sub amp.

 

[tfunk182]

It's probably the factory Active Noise Cancellation.

 

[SSinstaller]

Don't use the signal sense remote ouput frm your loc, IIRC fuse 36 and 37 should be on RAP in that car.

If you haven't bypassed th ANC it's voilet/blue in pin 2 of the third connector of the bose amp, just cut the wire about an 1.5" and tape both cut ends.