Hidden functions 88 OEM stereo

[Steven Petersen]

I don’t know if it works with the tape player. I need to see if I can find a tape. Does it work on your am/fm?

I confirmed mine works on AM, FM and when I use Bluetooth. I don’t have any cassettes, so I don’t kinks if my player even works.

 

[Steven Petersen]

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[kenh]

I tried out the instructions posted and on my 90 it does not work. BUT, I have the graphic equalizer in mine so somehow I'm not surprised.

Ken

 

[Steven Petersen]

I tried out the instructions posted and on my 90 it does not work. BUT, I have the graphic equalizer in mine so somehow I'm not surprised.

Ken

Mine’s got the factory equalizer and it works. So maybe it only works on 88-89?

 

[Triplel40]

Works in my ‘88 even in the aux/tape mode. Also here’s a post about the Dynamic Noise Reduction.

https://audiokarma.org/forums/index...ction-information-and-thoughts-wanted.385533/

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On a separate note, I recall once seeing one of these radios posted that was displaying military time (24hr) clock. So far I haven’t found a way to change it from 12 to 24, has anyone else?

Sent from my iPhone using Tapatalk

 

[Steven Petersen]

Works in my ‘88 even in the aux/tape mode. Also here’s a post about the Dynamic Noise Reduction.

https://audiokarma.org/forums/index...ction-information-and-thoughts-wanted.385533/

You must be registered for see images attach

On a separate note, I recall once seeing one of these radios posted that was displaying military time (24hr) clock. So far I haven’t found a way to change it from 12 to 24, has anyone else?

Sent from my iPhone using Tapatalk

I’ve never heard of the 24 hour clock thing before. On mine, I can’t get the DNR to stay on. Only the LD. The DNR lights up when I push the 2 buttons, but goes away when I release. I wonder if it only works on units like yours without the factory equalizer?

 

[AK49BWL]

I would love a 24 hour clock, I haven't seen ANY factory GM radios (up to 2006) that will allow that.

I have a little collection of CDMs here and can confirm this only works on the 88-90 models. Regardless of what head is used with it, it's the CDM that makes the difference.

 

[cc333]

I have a '94 with (as far as I know) 100% stock stereo (original head unit and CDM), and neither the LD nor DNR features seem to work.

c

 

[AK49BWL]

It doesn't on the newer CDMs. Only the older (88-90, maybe 91) models.

 

[89RCLB]

I can't get the DNR to stay active on mine but the LD works just fine. Is there a trick to get DNR to stay active?