I hooked up the Z1, perfectly!! Everything is fine, except i hear this loud squeeling noise when i accelerate!! It is so annoying. I dont know of anything that would work, can someone please help me? Thank you so much.

i have the same problem, is there any fix?

Here's some info on troubleshooting the problem from an old Car Stereo Review:

In Pursuit of a Noise-Free System: The Ten Commandments of Noise Prevention

Regardless of what you find you should always put a noise filter on your power line; they're cheap and easy to install.

Crutchfield Noise Filter


Hope that helps.

all of the avics have a 4 volt output on the rca's, if you short the center lead to ground you will blow a small fuse on the circuit board that is not easy to replace. If you have this noise the easiest way to eliminate it is to use a ground loop isolater (pac sni-1) or equivilant. This should eliminate the noise unless you have other noise issues also.

good luck


Mike
If you wish to ask further questions please email me
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I had this same issue and it was driving me crazy. It sounded like a dentist drill that got worse as I accelerated. Took it back to the shop. It was a really easy fix. For my setup ('03 Chevy Tahoe) there is a standard adapter and an adapter for the Bose system that is standard for my model. They switched the standard for the Bose system and the sound went away. Seriously you should get this fixed. It cost me $20 and the difference is amazing.

Do you have amplifier(s) in your system or are you using the speaker outs?