Low buzz sound

[Adam cordova]

I installed an aftermarket stereo in my 04 tahoe and I'm getting a
Buzzing sound no matter what function is on. Its there even if I turn down the volume. The pitch doesn't change when I accelerate or anything. Its pretty constant. Its annoying to say the least. The tahoe has the bose system with on star. I've tried searching the net with no luck. Is it a stock amp issue? Can I bypass it somehow? Or is it a grounding issue? Anything helps.

 

[Blackie]

Did you install with an aftermarket wire harness or tap directly into the vehicle stereo harness? If you used an aftermarket install harness, which one?

 

[Danny3737]

I had the same problem when I changed my head unit. Mine was coming from the OnStar speaker over my head. Since I didnt use it, I just unplugged it and the humming stopped

 

[Adam cordova]

I used an aftermarket brand Scosche. Along with the chime box.

 

[Adam cordova]

I had the same problem when I changed my head unit. Mine was coming from the OnStar speaker over my head. Since I didnt use it, I just unplugged it and the humming stopped

How did you unplug it? I gotta try something.

 

[Danny3737]

Mine was behind the passenger side dash. There were 2 plugs, I just pulled the one that made it stopped. I can't remember which one it was.

 

[bluebear15]

Did you ever figure this out? I'm having similar low buzz sound.

I tried pulling the plugs for the OnStar speaker wire but that didn't work. My buzz is coming from all speakers though, not the OnStar speaker above the driver.

 

[cmc76]

thats not an onstar speaker above your head. there are a few posts on the forum, its an hvac sensor. you can take it out and clean it with compressed air, or replace it.

 

[Danny3737]

The buzzing noise on mine was coming from whatever that is above the head right after I changed the head unit. I originally put duck tape over it to muffle it until I disconnected the OnStar box.

I hadn't heard about the temp control being an issue. I hope you get it figured out soon.

 

[Jackle1886]

I have some crackling and white noise coming through the speakers on mine. I have bose but no onstar. Lots of people with the issue, no solutions that I've found

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