OBD-II port speaker popping issue

[bcrooms]

When I plug in my OBD-II scanner on my 97 Silverado, the radio cuts off and the speakers pop very loudly.  

 

Is this a ground issue or a common problem?  My 96 Sierra never did this.

[pronstar]

Shouldn’t every accessory, and anything else that draws power, be turned off when you use a scan tool?

That’s how I’ve been taught at any rate...


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[Logan Lanfear]

Ive had mine on the scan tool and it doesn't do that with the radio on.  Sounds like you have a bad ground or wire somewhere.  

 

The question is where...

[bcrooms]

On 9/22/2018 at 8:26 AM, pronstar said:

Shouldn’t every accessory, and anything else that draws power, be turned off when you use a scan tool?

That’s how I’ve been taught at any rate...


Sent from my iPhone using Tapatalk Pro

I've never had a problem with other vehicles. 

[bcrooms]

On 9/22/2018 at 9:15 AM, Logan Lanfear said:

Ive had mine on the scan tool and it doesn't do that with the radio on.  Sounds like you have a bad ground or wire somewhere.  

 

The question is where...

Do you know where to find the ground wire locations?

[txab]

If this has been moded with aftermarket radio or even alarm system, I'd look into the wiring of those as well. Someone may have tapped an incorrect wire

[bcrooms]

On 9/24/2018 at 11:13 PM, txab said:

If this has been moded with aftermarket radio or even alarm system, I'd look into the wiring of those as well. Someone may have tapped an incorrect wire

Completely stock