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Type: Posts; User: verlon

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  1. Try disabling Stall Tq Management. Set [TCM]...

    Try disabling Stall Tq Management.
    Set [TCM] 5410/5411 pair to 8100/8000 RPM.
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    You can try to ask support for adding those...

    You can try to ask support for adding those parameters for your OS.

    Post your tune file.
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    This is Platform Requested Fan Speed Adjustement....

    This is Platform Requested Fan Speed Adjustement.
    HVAC module demands hotter coolant and lowers fan speed.

    Look for GMW8770-2006 document.
    https://www.doc88.com/p-70287674855817.html...
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    It will be 12614088 OS on Escalade L92 with...

    It will be 12614088 OS on Escalade L92 with different throttle, different VVT actuator and without TCCM option.
  5. Seems like you have a vapor lock. Fuel pressure...

    Seems like you have a vapor lock. Fuel pressure drops from 420kPa to 220kPa within 5 seconds between start attempts, you have something leaking in the fuel system.
    As you described it no start...
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    Look for [ECM] 12836 table.

    Look for [ECM] 12836 table.
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    It is possible, ECM and BCM both have to be...

    It is possible, ECM and BCM both have to be tuned. My truck has 20 times of 20 minutes remote start cycles.

    You can dial [ECM] 12630 table to warm faster. Use some retard (negative values) on cold...
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    Rear O2 looks absolutely normal. Downstream loop...

    Rear O2 looks absolutely normal. Downstream loop has a target of 775mV with insensitivity range 750-800mV on domestic vehicles. So anything smooth within 750-800mV range is normal rear O2 activity.
    ...
  9. Thread: Where to start?

    by verlon
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    Check for ECM pin X1.18 - High Speed...

    Check for ECM pin X1.18 - High Speed Communication Enable which is actually Accessory voltage.
    Without powering this pin ECM will not communicate.
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    This is the closest Knock Detection IC to the...

    This is the closest Knock Detection IC to the used in LS1 PCM which can be found in the public. It's not exact, but very close. By the way E38/E67 Knock IC is a successor of it with some...
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    No. Other VVT actuator settings is absent in the...

    No. Other VVT actuator settings is absent in the non-VVT calibrations.



    You can disconnect PCM and plug bench harness to the OBD connector on the target vehicle.



    2010+ ECM will not...
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    It does. Get used E67 and flash it with TBSS...

    It does.

    Get used E67 and flash it with TBSS 2008 calibration, it is the closest to L92 which you can get and it has the same throttle which is a big deal.
    Try to assemble minimal E67 + T43 bench...
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    Thanks. In assembler. :cheers:

    Thanks.



    In assembler.



    :cheers:
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    Ok, it's time to reveal nature of the VVE Bug. ...

    Ok, it's time to reveal nature of the VVE Bug.

    Gen4 ECM uses VE for calculation of the 4 things:
    - SD airmass (Actual MAP)
    - maximum reachable airmass (Max Reachable MAP = BARO +...
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    Gen5 doesn't have one.

    Gen5 doesn't have one.
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    VVE Bug have been solved. And I can confirm...

    VVE Bug have been solved. And I can confirm Cringer observation that idle surges are gone too.
    Now I'm trying to reproduce NormalTrns stuck.
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    I haven't de-pinned MAF, just failed it via...

    I haven't de-pinned MAF, just failed it via low/high frequency and zeroed out MAF curve.

    It's a good idea to remove pin, will try next time.
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    I've done similar thing today. Have tested...

    I've done similar thing today.
    Have tested AirCalc Mode with different settings and can't get it stuck in NormalTrns. May be not all OSes affected.
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    On L94 DynAir Enable/Disable matches fuel...

    On L94 DynAir Enable/Disable matches fuel thresholds (3900/4000).



    VE Patch is tested. I'm preparing detailed description of the VE bug and what exactly patch does.
    AirCalc Mode patch will...
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    No, that's closed loop timing. Fuel timing is...

    No, that's closed loop timing.

    Fuel timing is different and not defined in HPT as Chris stated.
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    That's awful, but yes, there is another bug in...

    That's awful, but yes, there is another bug in the AirCalc Mode state machine. It can get stuck in some state if DynAir Enable/Disable thresholds pair is lower than fuel Fast/Slow thresholds pair.
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    5.3 LMF does not have DOD

    5.3 LMF does not have DOD
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    Yes, but you have to enable 4WDL (X1-2) and ECO...

    Yes, but you have to enable 4WDL (X1-2) and ECO (X2-55) mode inputs in calibration.
    4WDL is enabled by setting Transfer Case Type to Manual 2 Speed.
    ECO Mode is a bit complex thing. You have to...
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    If this switch is set to false (as all...

    If this switch is set to false (as all calibrations a saw) Throttle maps selected using 4WDLow and ECO mode inputs:
    A - Normal
    B - 4WD Low
    C - ECO
    If switch is set to true then throttle map is...
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    Exactly! And you've caught far more precious...

    Exactly! And you've caught far more precious thing :)

    140121

    Thanks, Cringer.
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