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Thread: PCM Type and Protocol. Work in progress

  1. #1
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    Default PCM Type and Protocol. Work in progress

    Hey this is the start of my list. I post it on this forum in a thread.


    PCM type list.xls

  2. #2
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    Hey it looks like I cut out all the down under cars except a few 2007 cars.
    Sorry. I will try to edit them back in.

    If any one want to add to it please do. I like the TIS Disc #

  3. #3
    Lifetime Member Cougar281's Avatar
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    01-05 GMT800 ECM-TCM Comms is CAN (J1939), not GMLAN... 06-07 GMT800s are GMLAN. JustFYI (Otherwise I could make a 06 TCM work in my 04 easily). Dont see LB7's in there...

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    Quote Originally Posted by Cougar281 View Post
    01-05 GMT800 ECM-TCM Comms is CAN (J1939), not GMLAN... 06-07 GMT800s are GMLAN. JustFYI (Otherwise I could make a 06 TCM work in my 04 easily). Dont see LB7's in there...
    I will look into that.

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    Quote Originally Posted by Cougar281 View Post
    01-05 GMT800 ECM-TCM Comms is CAN (J1939), not GMLAN... 06-07 GMT800s are GMLAN. JustFYI (Otherwise I could make a 06 TCM work in my 04 easily). Dont see LB7's in there...
    E60 PCM or the P59?

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    Lifetime Member GMPX's Avatar
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    CalEditor, I appreciate you uploading these, but I fear these might be copyright documents, happy for you to put a link to an off site host.
    I'll be pulling them down directly off our server in 24hrs.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  7. #7
    Lifetime Member Cougar281's Avatar
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    Quote Originally Posted by CalEditor View Post
    E60 PCM or the P59?
    LLY's are E60, no clue what LB7's are. I should be able tell you when I get an LB7 ECM though. Like I said, I'm 99% sure the E60 uses J1939 for ECM/TCM/GPCM/FICM comms; IIRC, connecting the A40 GMLAN pins to the CAN bus crashes the bus causing all kinds if problems (Codes, no-start, floods, plagues, death and destruction); I could probably try it this weekend and see what happens... I've never done it, but someone else that has been tinkering with the A40 did.

    Edit: According to Mitchel Ondemand5, 2005 (and 2004LLY) Duramax uses a "SAE J1939 Serial Data Bus" (CAN) for the ECM, TCM, FICM and GPCM inter-module comms. Apparently, the Hybrid (If it exists) uses GMLAN for ESB/SGCM/EHPS/HCM/PCM comms.
    Last edited by Cougar281; April 17th, 2008 at 02:26 PM.

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    Quote Originally Posted by GMPX View Post
    CalEditor, I appreciate you uploading these, but I fear these might be copyright documents, happy for you to put a link to an off site host.
    I'll be pulling them down directly off our server in 24hrs.

    Cheers,
    Ross
    That should work better. It is all mine

  9. #9
    Lifetime Member GMPX's Avatar
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    Thanks, as I said, happy for external links to exist, just not direct here.

    Cheers,
    Ross
    I no longer monitor the forum, please either post your question or create a support ticket.

  10. #10
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    Default E77

    This is the E77 used on 07 and 08 Cadillac SRX with 3.6L
    It is a Bocsh

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