Low nav volume - 930BT

[duf]

Hi I recently installed a 930BT in my 2005 Chevy SSR 6 speed. I utilized a GMOS-04 harness to do so since my truck has the Bose premium sound system.

 

I performed the video bypass mod successfully as well.

 

I however am having an issue with the voice navigation volume, it is ridiculously low even though I have it set to max volume in the radio settings. I swear when I hear the voice it sounds like it is coming from the center of the dash where the GMOS-04 is located and not through the regular speakers.

 

In addition to the very low volume, the current music source is not lowered/muted when the navigation voice is activated making it more impossible to hear it.

 

Obviously it isn't supposed to be this way but I am looking for some direction in regards to troubleshooting the problem.

 

I assume moving the MUTE wire has nothing to do with the audio not stopping while voice is being played?

 

I also noticed when I have the volume turned up to higher levels the sound appears to start hopping between the left and right speakers. I am guessing this may have to do with the audio output adjustment on the GMOS-04 although even though set to a max volume (40), the system doesn't sound as loud as it should be.

 

Any ideas would be greatly appreciated. I will be ripping the dash apart soon to see if I can get it all figured out.

[duf]

I see in the GMOS-04 install manual it speaks of attaching the brown wire to the MUTE wire off the radio, since the wire is moved and grounded with the bypass, I wonder if this is the source of my issue?

[pionara]

wild guess: do you have the polarity (phase) inverted on one or more of your speaker wires?

[JasonH]

Nav volume and attenuation are in the settings.

[duf]

Just an update, the issue was resolved by ripping the dash apart again and tweaking the output potentiometer on the GMOS-04. I now have great volume!