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OnStar VCIM Location
Can anyone tell me where the OnStar VCIM (aka brain) is on our cars? Looked around the site and on google and came up with a couple references to the trunk area, but if anyone can narrow it down I'd appreciate it.
EDIT: Of course, a few minutes after posting and searching more I found this: https://www.cobaltss.net/forums/08-10-ss-turbocharged-general-discussion-152/09-bluetooth-dash-133325/ "On the rear package shelf,between the rear speakers, under neath the trim panel." |
Yeah I was about to post that, what are you up to? ;)
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Ultimatly I intend on totally removing OnStar, but right now I'm just investigating my options. If its anything like the corvette VCIM/CIM you have to leave the GMLAN connector plugged in, but otherwise its dead in the water. Then I'll go find a non-OnStar rear view mirror and make a pass-thru for the GMLAN. I won't know until I see it.
Sucks I'll lose the integrated bluetooth functionality, but whatever... if I get bored I'll figure out how to integrate an aftermarket bluetooth handsfree into the old mic etc in my spare time. Call me old fashioned, but the featureset of OnStar isn't anything I desire or need. I asked the dealer not to activate it, but he said he couldn't do that (which now appears to be a lie) AND OnStar refuses to terminate the service until the 1 year free is up. I could really deal without my car emailing me, tracking me and datalogging me :) I know that GM/OnStar wouldn't bother with a gimp like me, but it still bothers me. If you read the fine print on OnStar (which you agree to by buying the car, doh) its not the nicest document in the world. Now to find a how-to on removing the rear deck trim :) |
they actually forgot to activate my 1 year free onstar they kept calling me asking me to activate and i just told them no they finally stopped bothering me cause i told them there was no chance i was activating it.
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Just ground the antenna if you are worried about it LOL
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Just unplug the VCIM and leave the black connector with the 4 tan wires installed. No need to make anything or remove too much. You should be able to get your hand in there and disconnect by folding the seat down and just prying up on the shelf trim.
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Subscribed for a how-to
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Originally Posted by MARIN007
(Post 3573217)
Subscribed for a how-to
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Originally Posted by Maven
(Post 3573222)
See above post.
"On the rear package shelf,between the rear speakers, under neath the trim panel." Is that behind the heads of where the back seat passengers sit? |
Originally Posted by MARIN007
(Post 3573242)
*embarrassed* I don't understand what/where this is:
"On the rear package shelf,between the rear speakers, under neath the trim panel." Is that behind the heads of where the back seat passengers sit? |
Thanks Maven. I don't know...rear package shelf just sounds wrong to me, lol. Thought it could
be something else. |
Thank you Maven, thats the information I needed!
I just hope GM/OnStar doesnt start calling and harassing me over it since it was activated. |
I like the safety aspect of OnStar but won't be renewing after the free year is over. What ticks me off most on my car is how the non-sunroof cars with OnStar didn't get reading lights in the mirror. I hate having to reach up and over my shoulder to turn on the dome light. When my OnStar is up I'm switching over to a different model with reading lights.
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Originally Posted by Gimpster
(Post 3573972)
Thank you Maven, thats the information I needed!
I just hope GM/OnStar doesnt start calling and harassing me over it since it was activated.
Originally Posted by blackbird
(Post 3574577)
I like the safety aspect of OnStar but won't be renewing after the free year is over. What ticks me off most on my car is how the non-sunroof cars with OnStar didn't get reading lights in the mirror. I hate having to reach up and over my shoulder to turn on the dome light. When my OnStar is up I'm switching over to a different model with reading lights.
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Originally Posted by Maven
(Post 3574632)
OnStar isnt the reason you dont have reading lights in the mirror, the fact that youve got no sunroof is why. ONLY the sunroof cars get ISRV mounted lights. OnStar is fun to pick on but they dont have anything to do with your lights, LMAO.
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So i finally got my 2009 LS XFE de-onstared thanks to Maven. Worked like a charm! I did have to unbolt my headrests with a 13mm socket and bend the deckmat a lot to get to it then use a 7mm socket to take out the screw holding the Contential box in place. It did not say onstar on it in anyway shape or form but it did say it had .6 watt transmitting power and it had a small single pin wire (probally cellular antenna) hooked up along with the larger coax wire for the sattellite and 3 wiring harness. if you don't leave the black on with the 4 tan wires hooked up your car will not start. just wanted to clear that up. Does anyone have a work around so i can take that box out?
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Originally Posted by Gimpster
(Post 3572534)
If you read the fine print on OnStar (which you agree to by buying the car, doh) its not the nicest document in the world.
Just wondering, if, say one of us were to make a zillion consecutive passes at a dragstrip. Or maybe high-speed runs to test the speed limiter (on a closed road, or course ;-) Should we expect them to do anything of consequence with this information? |
Originally Posted by gatekeeper
(Post 3582819)
For example...?
Just wondering, if, say one of us were to make a zillion consecutive passes at a dragstrip. Or maybe high-speed runs to test the speed limiter (on a closed road, or course ;-) Should we expect them to do anything of consequence with this information? |
And that's exactly why I disabled mine.
I often autoX or just go to a fun night at the local strip. I don't really need them saying "Hey... we saw you were at Eddyville Raceway last night!" when something stupid and unreleated breaks on the vehicle. 09slobalt, on totally removing the box I'm trying to figure that out too. I'm curious how non-onstar'd Cobalts are wired. Do they have the harness there or not? If they do have it, I wonder if there is a GMLAN pass-thru dingus you can buy from GM to put on the black plug. Its a simple in/out pass-thru BUS so in the end its a simple matter of figuring out how to bridge those wires together properly. If it wasnt so darn tight back there maybe I could get my scope out and try to figure it out, but if a simple plug exsists for cars without onstar, that would be optimal. The newer Corvettes also disable their OnStar by yanking everything but the black plug and I need to go read up and see if any of them have already figured all this out for us :)
Originally Posted by gatekeeper
(Post 3582819)
For example...?
I'm a weirdo, I read every piece of documentation that comes with a car. |
Originally Posted by Gimpster
(Post 3583482)
And that's exactly why I disabled mine.
I often autoX or just go to a fun night at the local strip. I don't really need them saying "Hey... we saw you were at Eddyville Raceway last night!" when something stupid and unreleated breaks on the vehicle. 09slobalt, on totally removing the box I'm trying to figure that out too. I'm curious how non-onstar'd Cobalts are wired. Do they have the harness there or not? If they do have it, I wonder if there is a GMLAN pass-thru dingus you can buy from GM to put on the black plug. Its a simple in/out pass-thru BUS so in the end its a simple matter of figuring out how to bridge those wires together properly. If it wasnt so darn tight back there maybe I could get my scope out and try to figure it out, but if a simple plug exsists for cars without onstar, that would be optimal. The newer Corvettes also disable their OnStar by yanking everything but the black plug and I need to go read up and see if any of them have already figured all this out for us :) Read the usage agreement booklet. It says pretty plainly what the data acquired could potentially be used for. That also goes for the Event Data Recorder statement found in the owners manual. I wouldn't mind finding out how to disable that little treasure too if its not built into the PCM. I'm a weirdo, I read every piece of documentation that comes with a car. The EDR, is a function of the SDM(Airbag) there is no way to defeat it and keep airbags. Not sure what Vette site you look at but if you search at DigitalCorvettes youll find my info for this there as well(former supermod) All vehicles with GMLAN have to leave the comm wires plugged in or loop them. You cant remove any module from the high speed network and have the car function. |
Originally Posted by Maven
(Post 3587280)
The VCIM can be bypassed, like you said its just a pass through circuit, all you need to do is loop the pairs together. Non OnStar cars dont have the harness at all. Youll set some communication codes in other modules for the VCIM not being on the network since youre unplugged but thats it.
The EDR, is a function of the SDM(Airbag) there is no way to defeat it and keep airbags. Not sure what Vette site you look at but if you search at DigitalCorvettes youll find my info for this there as well(former supermod) All vehicles with GMLAN have to leave the comm wires plugged in or loop them. You cant remove any module from the high speed network and have the car function. |
So will i get a check engine light if I jumper those wires together? Will it pass emmissions with those other computers throwing codes?
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If you find out how to go without the VCIM, I'll buy it from you. I need one from a 2009 SS (or other bluetooth equiped car). The one I need is part #25983683. I think its also possible that 20793555 could work. I'm having a hard time finding any of these, the junk yard I talked to said they just throw them away since nobody ever wants them.
Mavin, what does Onstar do if they catch you doing something they don't like? Do they have driving guidelines? I'm not so much worried about the warranty as being turned over to the cops for doing 120 on some back road somewhere. Any chance you could keep the bluetooth by cutting the in-car cell phone antenna off? |
Originally Posted by Luke42_02
(Post 3588367)
If you find out how to go without the VCIM, I'll buy it from you. I need one from a 2009 SS (or other bluetooth equiped car). The one I need is part #25983683. I think its also possible that 20793555 could work. I'm having a hard time finding any of these, the junk yard I talked to said they just throw them away since nobody ever wants them.
Mavin, what does Onstar do if they catch you doing something they don't like? Do they have driving guidelines? I'm not so much worried about the warranty as being turned over to the cops for doing 120 on some back road somewhere. Any chance you could keep the bluetooth by cutting the in-car cell phone antenna off? |
The bluetooth absolutly sucked with my iPhone. I tried it a few times before disabling the box and everyone kept complaining about not being able to hear me well. Hopefully it works better with whatever phone you get.
I'd sell you my box when I remove it, but I think I better keep it around should I ever sell the car. |
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