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2010 EXT, 2001 DTS
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101 Posts
Discussion Starter · #1 ·
When my OnStar went down at the beginning of this year due to the FCC discontinuing analog cellular service, I decided it would be a good idea to use the buttons and microphone already installed in my 2001 DTS to interface to an existing bluetooth hands free kit.

It took a little longer than expected, but its now complete.

It works great and is real easy to install. You just locate and remove the OnStar VIU and plug this module in its place. Using the buttons on the mirror, you can place calls, accept calls, transfer calls and even mute calls. The module will automaticaly mute the radio when a call comes in. Even the steering wheel volume controls work to raise or lower the volume. The voice quality is excellent since you use the high quality OnStar microphone. And best of all, there are no wires to run. The OnStar LED indicates call progress, pairing, mute status, etc.

This module works only with older cars utilizing the class 2 communication bus. It is intended to replace the obsolete analog onStar system that is no longer in service with the bluetooth unit which ties directly to your cell phone. When installed, it mimics the OnStar communications so that no codes are set.

Is this something you guys might be interested in? I am not an authorized vendor, and I do NOT have anything to sell yet, but with enough interest, I could set something up.
 

· Registered
2010 EXT, 2001 DTS
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101 Posts
Discussion Starter · #4 ·
OK.
Not too many responses, but here is a picture of the existing product showing the harness. Again, this simply plugs in right where the old onstar viu unit was. No running any wires. You get to use the mirror's onstar buttons and the existing onstar microphone.
This should work in any GM vehicle that used the old analog onstar system, although the interface harness may be slightly different.
 

· Registered
2010 EXT, 2001 DTS
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101 Posts
Discussion Starter · #5 · (Edited)
OK.
Not too many responses, but here is a picture of the unit with the harness. Again, this simply plugs in to where the old analog onstar viu was and enables you to use the buttons on the mirror, along with the onstar high quality microphone to allow you to connect directly to your bluetooth cell phone.

I think this will work with most cadillacs of this vintage (circa 2000) and should also work with any GM having analog onstar unit that utilizes class 2 data bus for communications. The harness may be slightly different for other GM vehicles.
 

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· Registered
98 Seville SLS, 92 Eldorado ETC, 87 Chrysler Fifth Avenue
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381 Posts
Eh I doubt this module would work for my SLS :( I wished there was one for the hands free kit that was optional....

I looked up the model number on that module and found that I already have that in my car (the moto kit). I guess the easiest option would be to wire it to my radio.

Unless this module would work if I had the dealer use the tech2 and tell the car that there was a hands free kit installed, then it would take my left steering controls and turn them into call / end buttons? I wouldn't mind not having the fan speed buttons just for this purpose.

Does this connector look like the same one?
View attachment Service Information.pdf
 

· Registered
2010 EXT, 2001 DTS
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101 Posts
Discussion Starter · #9 ·
As you can see from the previous pic, the bluetooth portion is based on a motorola HF850 module. I simply created an interface to the mirror buttons and mic which replaces the keypad and mic that comes with the kit.

So to pair, you simply hold the blue onstar button for three seconds, and the indicator led will start flashing green / off. Then you put your cell in search mode. Once the moto module is found, you enter the linking pass code into your phone.

This only has to be done once, and every time you get into your car, your phone will link to the car kit. You can mute the call using the red emergency button. And you can transfer the call to your cell for privacy if someone else is in the car.

When on hook, the indicator is red, and when muted it flashes red/green.

Pricing depends on peoples interest (total quantity). The pcboards are expensive to build in low quantities. And the moto modules are not cheap either. I really set out to do this for myself, but a friend of mine thought it would make a cool product so he talked me into posting it.

I'm out of town for the rest of the week, but I'll see about making a video or at least some kind of manual showing installation and operation.


Regarding Hyperboimmv, If you already have a moto kit, then all you need is the pcb and harness. The pcb plugs right into the moto module.
Now in my '01 DTS, there was a cell unit and a VIU which were located in the trunk. The VIU had two connectors on it and the cell module had one. But they all connected to this harness connector shown in the pic. So for install, you pull out the VIU, and the cell module and the interconnecting harness. This gets tossed and the unit in the pic get installed by connecting it right where the old harness was.

A picture (or video) is worth a 1000 words so I'll see if I can get something better put together soon.
 

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· Banned
2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
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16,472 Posts
it itll work on my 03 STS (it can be upgraded but i dont feel like paying for it) then ill take one and be sure to pass on how well it works to the forum and customers at my work (im an installer at BB and youd be surprised how many ppl come in asking for something like this)
email me [email protected] and maybe we can work something out...
 

· Registered
98 Seville SLS, 92 Eldorado ETC, 87 Chrysler Fifth Avenue
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381 Posts
I think the cellular unit I am talking about is different. CadillacSTS2003, do you know if the cell kit in the 98 has the same connections as the onstar kit? I guess I could look the wires up at least and could probably hack something together.

And as far as I know this module should work on any gm car with analog onstar. If this is your board, I'd patent it and post on every gm forum. You'd make a mint.
 

· Banned
2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
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16,472 Posts
off hand no i do not but i highly doubt it wont work as your onstar used a cell phone as a controller as opposed to the mirror and built in microphone
even if you had a similar connector you would have no way of controlling it...
 

· Registered
2010 EXT, 2001 DTS
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101 Posts
Discussion Starter · #14 ·
When I get back home I'll post a picture of the VIU / cellular units that I pulled from the trunk of my DTS. If they are the same, it should definitely work.

My unit uses the buttons and microphone to control the motorola module which in conjunction with your cell phone, effectively replaces the cars cell unit.

Basically, it converts the mirror signals and microphone levels into something that is compatible with the bluetooth module which then communnicates to your cell, which actually does the dialing. Unlike the onstar system, you get to use your cell number, minutes and service provider, whomever, whatever that might be.

And hyperboimmv, I dont know if it is patentable, but I'm glad to here that you think it's worthwhile. I love having it in my car, and I thought other caddy folks would love it too, but aside from you, stujak, and cadiallcsts2003, nobody seems interested.

If it looks like it will work , I will hook you guys up with a free unit (less moto kit) to be field tested. I have a few prototypes left over that I can piece together. I only ask that you guys work with me in case there are any bugs. And if it works for you, you can help me spread the word.
 

· Registered
2018 Escalade Premium Luxury
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470 Posts
Please count me in as a beta tester for your prototype. I will be happy to give you plenty of feedback. I have an 02 Deville with the analog onstar.

It will make a great addition to my carPC which is going in this summer. I LOVE gadgets like this.

Is this the kit I would need to buy? http://direct.motorola.com/ENA/SetUpproduct.asp?productid=HF850&Category=Car Kits Then what, just plug your interface in and go?

Hell, I'll even be glad to pay you for shipping and be happy to spread the word for you! :)

Subscribed!
 

· Registered
2002 Cadillac DTS Deville on Vogues and DTS Blades
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607 Posts
I havent checked the forum in a whiel, otherwise i would have been on board the first minute ths post was up.
Please count me bro.
Ive been looking for this for a LONG TIME.
That was the only reason i bought the pioneer avic d3. To use my ipod and cellphone.
Now that i have the aux in hack that sts2003 made on my stock nav and you have this........i can use the phone too!!!!!
Much appreciated if you really get this going bro.
ALLOT OF US on this forum, IM SURE, ARE IN.
Heres my email just as fyi
[email protected]

fyi
i have a 2002 dts with the stock nav unit and whenever i press the onstar button or the phone button, a screen with a number key pad, answer, end, phone book buttons pops up. Will this still happen when your interface is installed? Will i be able to dial using the screen buttons and phone book contacts saved into the nav unit?

Ill take a pic and post to show what i mean.

Anyone alse have a stock nav with onstar that can chime in?
And im talking factory installed, not the nav units sts2003 sells. Just saying that cuz it might make a diff.

Anxiously waiting.
 

· Registered
2002 Cadillac DTS Deville on Vogues and DTS Blades
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607 Posts
Heres the link that tells you everything about his creation.



it works on devis, sevis and eldos...from what i read.

Ill take pics and maybe even vid of the nav with onstar displayed and aux hack running.

Its worth getting it from him. Thats if he still does them and has any.

cadillacsts2003 has a gr8 rep so hes legit, and is a genius.....
maybe if you continue with your bluetooth creation and come through for us here, youlll get the title too.... some day.

Weve heard the 00-05 deville bluetooth solution before but it turns out to be BS.
So dont think were not interested...just tired of the "solution" talk.
But if youre for real an dhave action to go with that talk, and send us one for testing (especially me so that i can test it on my stock nav with onstar and see how it works with the on screen dial pad menu etc...) well definitly be able to reccommend it and push it for you here and everywhere.

hope you come through bro

pics and possibly vid of my onstar and aux vid/audio hack working will be up tommorrow.

keep us updated
 

· Banned
2005 STS4 1SG: GM Acc Lights, Corsa, Platnium Grille, Volant
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16,472 Posts
where have you been AL lol
if devise how to install a fully functional nav into any 98-04 Seville 00-05 Deville and am still working minor tweaks for the 96-97 Seville/96-02 Eldo

as for the bluetooth youll get more interest beyond a doubt with more exposure and that can only come from word of mouth on a good product
with a movie clip and one or two OP (original posters that are trusted) youll be able to move it, also a price would be handy
 
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