Replacement Radio has no Audio! - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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  #1  
Old 07-15-2010, 09:14 PM
amesghali amesghali is offline
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2002 Chevy TrailBlazer LT EXT
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Question Replacement Radio has no Audio!

Hi,

My OEM Bose RDS, 6-CD radio burned out on me. I got a used radio that came out of an Envoy. This is a single CD RDS unit (not a BOSE). When I installed this, everything lit up okay but there is no sound coming out. Nothing at all. no hissing or any noise.

Can some one let me know what is up here? Is this a compatibility issue? Someone mentioned that the radio may need to be unlocked by the dealer - is this true? Is the replacement radio faulty?

Thanks for any help.

AM
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  #2  
Old 07-15-2010, 09:20 PM
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RayVoy RayVoy is offline
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The Bose radios have amps at each of the speakers, the non-Bose sets have internal amps.

You may also have a problem with the security built into the radios.

Each radio is programed with the trucks VIN, if the new (used) radio has not been reprogrammed, it's looking for a different VIN and will not work.
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  #3  
Old 07-15-2010, 09:41 PM
amesghali amesghali is offline
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Here is the puzzling thing. I thought that a locked radio would not function at all. The display would show the word "LOC". The display on this radio works fine. I have also heard about the VIN specific issue with these radios.

And if I am having a conflict issue with the BOSE speaker amplifiers, how do I get around this?

I'm thinking of just getting rid of this fricken thing and getting an after-market radio like a Kenwood for example. But will the existing speakers system work?

Will I have to replace the existing speakers and wiring?

Any help is appreciated.

Thanks,
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  #4  
Old 07-15-2010, 09:50 PM
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chevtrlblzr chevtrlblzr is offline
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Some vehicles have bose that have amps at each speaker.
Our trucks don't - they have 1 amp located in the rear quarter panel.

As far as I know, that radio won't work for you. You need a radio from a bose equipped TrailVoy. It also has to be from a 2002 - mid 2004. They changed the way the radios communicate with the amps then. (Lux to non-lux)

It's not too bad to replace the radio with aftermarket. If you want to add an amp and change speakers, that can be a hassle - but there's plenty of threads on that for you to read to decide if you want to go that route.
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  #5  
Old 07-15-2010, 10:01 PM
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mac02ltz mac02ltz is offline
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I have a 6 disc bose from my 2002, I also have the amp for it. If you need one I can sell you mine cheap. The buttons have wear on them but everything works perfect. Also if you needed the numbers for the activation I could always get them for you.
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Old 07-15-2010, 10:06 PM
amesghali amesghali is offline
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Thanks for the offer mac,

I think that I'm going to just dig out all the speakers and go with a whole after-market system.

The only thing I would like to know is if there is a way for me to use the existing speaker wires. It would make life a lot easier for me. Otherwise I will run all new wiring.

Thanks,
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  #7  
Old 07-16-2010, 12:36 AM
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smalltownrp830 smalltownrp830 is offline
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my nissan maxima had a bose system..when i swapped out the radio for an aftermarket one the sound didn work either. i had to tap a 12v wire to the bose amp to get audio. dont know abot the trailvoys though. mine was nonbose. good luck
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Old 07-16-2010, 12:08 PM
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mac02ltz mac02ltz is offline
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Quote:
Originally Posted by smalltownrp830 View Post
my nissan maxima had a bose system..when i swapped out the radio for an aftermarket one the sound didn work either. i had to tap a 12v wire to the bose amp to get audio. dont know abot the trailvoys though. mine was nonbose. good luck
This won't work on our systems.


You could use the Bose speakers but like I said there are 6 of them and 2 of them are meant to be "mid-range subs", which are the door speakers. So pretty much you could only use the dash and rear speakers. I have the colors marked in my truck still since I have been using them and haven't fully upgraded yet. I just now blew my last one, which means the lil lady is going to get me some components finally lol.. But I can take a look at them if you want me to and see what they are, also I will take some impedance measurements for you to see if you are able to just run them off of the deck.. I'm pretty sure however that your factory deck won't be able to run them well at all and you will in fact need an aftermarket just for a decent enough sound out of them. IMO F*** Bose just do a full gut and replace deck and speakers alike if you have the cash, if not just get the proper factory radio and you're set.
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Old 07-16-2010, 01:44 PM
amesghali amesghali is offline
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I think after-market HU and speakers is the way I will go. Thanks for everyone's input.

Now, I need to know exactly where this fricken BOSE amplifier is located. I imagine that all of the speaker wires go to it. I would be able to isolate and splice into them so I would be able to use the existing wiring with the new HU and speakers.

Also, the wire colors that go the harness connector that goes into the back of the OEM radio do not match the color codes in the wiring diagram that is posted here. I've done a ton of googling and have come up with nothing that matches. I have the 2002 Trailblazer LTZ. Can someone shed some light on this?

If I can locate the amp, and if all the wires end there, I should be able to use a meter and locate each wire.

Thanks,
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  #10  
Old 07-16-2010, 02:08 PM
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mac02ltz mac02ltz is offline
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Quote:
Originally Posted by amesghali View Post
I think after-market HU and speakers is the way I will go. Thanks for everyone's input.

Now, I need to know exactly where this fricken BOSE amplifier is located. I imagine that all of the speaker wires go to it. I would be able to isolate and splice into them so I would be able to use the existing wiring with the new HU and speakers.

Also, the wire colors that go the harness connector that goes into the back of the OEM radio do not match the color codes in the wiring diagram that is posted here. I've done a ton of googling and have come up with nothing that matches. I have the 2002 Trailblazer LTZ. Can someone shed some light on this?

If I can locate the amp, and if all the wires end there, I should be able to use a meter and locate each wire.

Thanks,
Just give me a little bit and I'll get the colors for you. Your amp is behind the passenger side paneling in the back of the truck over the wheel well. You will need a 10mm wrench or socket to get it lose. There is a 12v power source there too so be careful when cutting wires. I'll go take a look at my truck now. PM me if you want a number to call me at and go over this.
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