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Audio Systems/noise through power cable

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Expert: - 2/8/2008


Question
i'm trying to install a mono block amp in a 2007 gmc sierra.  When the vehicle is running without the rca's plugged into the amp, there is a lot of noise produced through my subs. A sort of constant humming.  Pressing the accelerator not not change the sound.  Pressing the brakes makes them thump over the humming.  I have tried 3 seperate ground locations including to the battery's ground itself.  The power cable is straight off the battery.  I have had the amp tested and it checks out.  Any suggestions?

Answer
there is nothing wrong with the amplifier
the problem is the vehicle  most of the radio wires send  audio and data
there hi low interface made for gm vehicles only you have to find one of them
also  check the battery ground to chassis and where is the remote coming from ? need be  from the radio only
good luck

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Ernesto R

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Please year and model of the vehicle i need all the details I'am a car electronics installer with 23 years of experience. I'am very familiar with installations of in-dash head units,factory head units, factory car audio, hands-free phone kits, auxiliary audio inputs and iPod iPhone interface integration and security systems if you need any help with your factory stereo, or how to add auxiliary audio or listen to your ipod android in the vehicle I currently have a MECP Master Installation Technician certification. My answers are based on my experience in vehicles and my knowledge of automotive electronics I don't put much emphasis on brand names; you won't often find me putting down a brand or pushing one on dont send me a list of what brands i like better sorry i can not help you with aftermarket or vehicles that are not in the u.s.a also video and security

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factory car audio
factory cd changer and hands free cell phones
satellite radio
auxiliary audio input ipod interface audio modules

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MECP certified chrysler tech

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