So if I understand correctly, you don't hear the OnStar voice prompt either?

No I dont hear the OnStar prompt. But the light for the OnStar flashes when you push it

The light flashing really isn't relevant here. This is a function of the VCIM and won't be controlled at all by the stereo. This is important to try and narrow where the problem is. Do you have a multimeter?

What am I supposed to do with the blue/white wire on the 32 pin?

Nothing. This ultimately connects to the Blue/White wire coming from your 10 pin connector on the module.

First of all, you need to answer these questions:

1. Do you have a multimeter?

2. What type of head unit are you installing (make and model)?

3. How is the wire labelled on your head unit that you connected the blue/white wire to?

4. Is your dash still apart and accessible?

1. Do you have a multimeter? yes

2. What type of head unit are you installing (make and model)? Alpine cda 9831

3. How is the wire labelled on your head unit that you connected the blue/white wire to? remote turn on

4. Is your dash still apart and accessible? not at this moment (11:30 pm at night lol)

If you've checked all your fuses (including the ones under the rear seat since this is where your amp fuse is), my next step would be to measure the voltage on the amp turn-on wire. Make sure when the HU is powered on that there is +12V present.

If there isn't, you can test the function of the system by disconnecting the blue/white wire from the amp turn-on wire and connecting it (the blue/white wire from the GMOS-09) to +12V elsewhere (ie in your lighter outlet). This should turn on your amp. If you still have no audio, the problem may be with the module and contacting the manufacturer may be required.

I'm assuming you already have this:

http://vault.alpine-usa.com/products...20CDA-9831.PDF

If there is no +12V signal on the Blue/White wire coming FROM YOUR HU, you may want to call Alpine. There seems to be some configuration information through the front panel for external amps (although I'm not positive it applies here).

sounds silly, but also.. im noticing after checkin some of my work resources....


-Retains Onstar with adjustable volume output
-Retains chimes with adjustable level output

is the volume on the module turned up?

which could eliminate 2 problems and leave it at just the headunit

Never push the simple solutions aside...