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    OK, I'll chime in. My vehicle is a 2009 Chevy...

    OK, I'll chime in. My vehicle is a 2009 Chevy HHR and the FSM shows the power to the on at all times, but fused through the Front Power Outlet aka cigarette lighter socket.
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    List of CAN Transceivers

    Another good list:
    http://www.kvaser.com/can/products/drivers.htm
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    Large list of Microcontrollers with built in CAN Controller

    See:
    http://www.kvaser.com/can/products/uctrl.htm

    Although not up to date I was amazed at just how many options there are!
    One missing is the Atmel AT90CAN32/64/128
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    Yes, a listing of available Transceivers is at...

    Yes, a listing of available Transceivers is at the beginning of this thread.

    If anybody finds that the remaining chips are discontinued please bring it up.
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    Important Message from NXP

    After finding the NXP AU5790 discontinued on the NXP web site I ask for an explanation. Here is what I received:

    FROM NXP:
    The AU5790 will be discontinued by NXP due to closure of current fab...
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    Actually I think Joe was adding more information...

    Actually I think Joe was adding more information saying that things are becoming gray in the industry.


    I think we are all saying much the same thing. I will try to clear up any...
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    Yes. I took apart my Radio and found both the SW...

    Yes. I took apart my Radio and found both the SW GMLAN and the Hi Speed GMLAN transceivers wired directly to the micro-controllers. This of course removed the CAN Controllers from the picture.
    ...
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    If door locks were all I wanted, Yes the product...

    If door locks were all I wanted, Yes the product line linked above would probably work. However, knowing me as soon as I get into this stuff I will have other questions and desires. That is why I...
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    I think we are all in the same boat. I see no...

    I think we are all in the same boat. I see no one who has commented yet that has any in-depth personal experience with the Single Wire(SW) GMLAN(CAN). The money is with OBDII, this is not OBDII and...
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    This makes some sense to me, in theory at least. ...

    This makes some sense to me, in theory at least. What's the first thing that happens when someone returns to their car - opens the door or they use the remote! In either case a wake-up should be...
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    View Post

    The modules that are on my Chevy HHRís SW GMLAN are:
    Inflatable Restraint
    Instrument Panel
    Theft Deterrent
    Radio
    OnStar
    XM Radio
    Remote Control Door Lock & Tire Pressure
    and of course the...
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    In my case the Body Control Module(BCM) acts as...

    In my case the Body Control Module(BCM) acts as the GMLAN bridge and I believe is just another node. In this case the BCM has a node from the low speed CAN and the High speed CAN. One piece of...
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    My understanding is the 12v over voltage command...

    My understanding is the 12v over voltage command is only to send "Wake-up" commands to the remaining nodes. Is there some other function the 12V does I am not aware of?



    I missed that on my...
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    I had considered doing something like what...

    I had considered doing something like what Vitality suggests and had the following problems with the concept:

    * A review of the ELM product manuals from various manufacturers did not reveal a...
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    I don't understand the "ICE" term. However, I...

    I don't understand the "ICE" term.

    However, I wish to intercept the door lock and unlock command from the remote receiver and the chime on and off commands.
  16. Please share.

    Please share.
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    My vehicle is a 2009 HHR. It is my belief that...

    My vehicle is a 2009 HHR.

    It is my belief that all GM vehicles since ~2006 have both the Low and High Speed GMLANS, but what do I know.
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    Low Speed GMLAN Interface

    Ok, Iíve been looking around this board for a while, so now for my first post.

    I am looking for a low cost off-the-shelf Vehicle to USB or RS232 adapter for the Low Speed GMLAN. At this time I do...
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