I recently purchased a 94 Z28 with a BOSE stereo system in it. When I got the car the stereo was locked so I called a buddy at a dealership and we got it unlocked, after I got it unlocked I found it didn't work anyways. I went to the stereo shop and purchased an inexpensive new Clarion deck and installed it. It works great if I keep it turned down quite low but when I start turning it up it starts cutting out, it sounds like someone is turning the volume **** up and down really fast. Anyone ever hear of this before? How can I fix it.

 

first thing I would look for is loose wires or shorted wires.
check and make sure all is grounded properly and the connections are good

 

I am having the same problem with the BOSE in my 95Z

 

The problem is that the factory Bose stereo puts out 2 ohms to the speakers. The amplifier at the speakers then boosts up the output. You just put in an aftermarket stereo which puts out 4 ohms. The amplifier then boosts up the output. The speakers are not compatible to the aftermarket HU (head unit). So therefore is going to sound like butt. There are 2 solutions that I know of.

1. Scocshe sp?, makes an adapter that you splice in at the HU to drop the power load down so your speakers can handle it. I picked one up from Wal-Mart for about $20.

2. Replace all the speakers with aftermarket speakers and an amp to push them. Price here is all dependant on what you put in.

Good Luck.

 

By some chance do you know the part number for the part you picked up from wal-mart?

 

That is what I had to do when I replace my stock Bose head unit with a stock non Bose head unit. If you change out the speakers you to aftermarket or shange the headunit back to a Bose headunit, you should have no more problems.