[VR6JH]

Hello,

Does anyone have a good source for diagnosing the original Delco/Bose system? I’d like to retain factory, and most of the information google is coming up with relates to the Corvette system with individual amps on each speaker.
At max volume i have faint audio from the speakers. I assume the amp has failed?

Any information pertaining to fixing this system would be appreciated.

 

[Z09B4U]

https://www.justanswer.com/chevy/0xqnt-1991-chevrolet-caprice-classic-bose-sound.html

Will a 92 Caprice LTZ radio work in a 91 Caprice Classic...

The factory bose radio in my 91 Caprice Classic is dead I believe. It will only make a faint whistling sound when turned on, then fades out. The clock in the radio will not even come on. The power antenna will not raise either. I am hoping its the radio and not the amp causing this. Seems like...

www.impalassforum.com

In general terms the "radio" in your dash seems to be a "head unit" with a very small audio output.
If the head unit is sending out clean but low level audio you may have a wiring or amplifier problem.

I grabbed this information off the internet in a minute.

As has been suggested to you a factory service manual would have schematics, diagnostic tables and recommended tools.

 

[VR6JH]

https://www.justanswer.com/chevy/0xqnt-1991-chevrolet-caprice-classic-bose-sound.html

View attachment 201218

View attachment 201219

Will a 92 Caprice LTZ radio work in a 91 Caprice Classic...

The factory bose radio in my 91 Caprice Classic is dead I believe. It will only make a faint whistling sound when turned on, then fades out. The clock in the radio will not even come on. The power antenna will not raise either. I am hoping its the radio and not the amp causing this. Seems like...

www.impalassforum.com

View attachment 201220

In general terms the "radio" in your dash seems to be a "head unit" with a very small audio output.
If the head unit is sending out clean but low level audio you may have a wiring or amplifier problem.

I grabbed this information off the internet in a minute.

As has been suggested to you a factory service manual would have schematics, diagnostic tables and recommended tools.

Well that was entirely unhelpful and came off pretty dang snarky.

Anyways, I plan on rebuilding the amp, I'll try to do a writeup with amp diagnostics, part numbers, etc. It doesnt seem to be found anywhere on the internet, so maybe it'll help someone in the future.

 

[Z09B4U]

most of the information google is coming up with relates to the Corvette system

Any information pertaining to fixing this system would be appreciated.

You are welcome for the non corvette 1991 caprice specific information. Sorry it did not meet your criteria.