sound

**cletus** · 07-25-2009

i have two speakers...they are factory and there is nothing in between them. Yes the whole system is ac delco and it cam with the car. there are six speakers total two in each front door and the two in the back. I have a 99 grand prix gtp. Amazing I can fix any thing on the engine but can not figure out this audio stuff. the only thing under the back is a black cover where the light in the rear window is at. Thanks for your words of help. But I think I have a different grand prix that you are thinking of. I still open for suggestions

**mystic231** · 07-25-2009

If there is only two rear speakers then there is no extra amplifier. You should see code "UX7" on your build label inside your trunk.

**mystic231** · 07-25-2009

Examine very closely the connectors that plug into the back of the radio for any loose or weak wires. The wire is weakest where it goes into the crimp and that's where the problem usually is. I just repaired the shift interlock on my '98 because two of the wires had come apart at the crimp. These wires are buried inside the console and were taped/restrained well but it happened anyway.

Edit: "UQ3" is "Speaker System, Performance Enhanced Audio". You do have an amplifier.