I have looked into this myself as other people have asked me the same thing about their GM cars. It seems that everything is there, microphone, etc..wmmsbo said:I know there is an ONSTAR phone in the car. I have a 2002 Seville SLS. Is there any way to use MY cell phone with the hands free unit that is already installed in the vehicle? ???
Make sure. If it is a Hughes model it is more than likely a 3 watt digital. Is it factory? You might still have a problem though. 5 years ago I had a Motorola 3 watt digital car phone. AT&T fought me tooth and nail to activate it. Now, they won't activate them. The cut off for current subscribers only was like four years ago. I like powerful car phones but there are problems. My handset didn't make proper sounds for newer services so say pushing 1 or # for something didn't work.JWH said:Checked into using the car phone in my 97. Just wanted to activate it. But no go. All the services including verizon cingular,etc said no because its analog and not digital. They are phasing all analog out. Only way is to have the ubit replaced with digital. About 500.
The vehicle communication interface module (VCIM) is a 3-watt cellular device that allows the user to communicate data and voice signals over the National Cellular Network. It is powered by a fused, battery positive voltage circuit, connected through vehicle wiring to the 3-button assembly and the radio, and attached by means of coax cables to the cellular and navigation antennas. Ground for the module is accomplished by means of dedicated circuits that are routed with body wiring systems to chassis ground points. The module houses 2 modems, one to process global positioning system (GPS) data, and the other for cellular information. Satellites orbiting earth are constantly transmitting signals of their current location, from which the OnStar® system is able to pinpoint its own location. The navigation antenna receives these GPS signals and provides the data to the VCIM to be processed. The VCIM communicates with the rest of the vehicle over the class 2 serial data bus. Ignition state is determined by the VCIM through class 2 messaging. The module also has the capability of commanding the horn, door lock/unlock, and operating the exterior lamps using the class 2 serial data circuit. When an OnStar® keypress is made, a class 2 message is sent to the audio system to mute all radio functions and transmit OnStar® originated audio. After the audio system is muted, the OnStar® signals are transmitted to the audio system on the cellular telephone voice signal circuit, and returned to the module on the cellular telephone voice low reference circuit. The cellular modem connects the OnStar® system to the cellular carrier's communication system by interacting with the national cellular infrastructure. The module sends and receives all cellular communications over the cellular antenna and cellular antenna coax.
I just wanted to say I wouldnt go to any trouble to fix this, in about a year the analog systems wont work anymore anyway. And your vehicle is too old for the digital upgrade kit that GM has made available for 500.00.brmurph said:ewill3rd (or anyone that might know the answer,nobody seems to know much about the older Hughes phones),
Sounds like you have worked on the older systems (mine is the onstar VSP made by Hughes from 1998), do you remember any problems with the GPS intermittently working? I get a message on the DIC sometimes that says "No GPS" and when I call Onstar they say the GPS is not working (all the other Onstar functions and phone functions work great). Again it is only intermittent so hard to debug. The good news is I have a new Onstar kit I bought off ebay that has all the parts including parts for the GPS but I am not sure which part to replace, any thoughts?
BTW ewill3rd I have read many of your post and just wanted to say it is nice to have a caddy technician on the board that is so willing to help and that so far has not been too confrentational. Seems like the board has a tendency to run off techs for some reason, hopefully that won't happen this time. keep up the good work and thanks.
Welcome to the forums!Sorry for bringing back an old post, but I may have a solution that doesn't require taking your dashboard apart.
I have a 2002 Cadillac DTS that has a cassette player. The previous owner left one of these in the cassette player when I purchased it and it works fairly decent. They're about $6 at Walmart. Hope this helped someone.