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Thread: LS1b 12606807 OS- what maps can limit throttle blade position

  1. #1
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    Default LS1b 12606807 OS- what maps can limit throttle blade position

    On a completely stock 2006 Sierra, LS1b, 12606807 OS, with Allison 6 speed. Pedal position goes to 100%, but the throttle blade flatlines at 53%. {D0301} is disabled, {D2001-2003} are turned off. {B6614} is set to positive 640 lb-ft.

    Traction control is inactive. Are there any other tables that are allowed to limit the blade position?

  2. #2
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    I also found {B6612} "ETC Pedal Torque Reduction". Based on RPM and Torque limit %, it will reduce ETC percentage. Problem is, I can't find anything that would call for torque limiting. Everything is turned off from the factory(traction control, BTM, axle torque...)

    any thoughts?--could this have to do with the positive 640 lbft on this OS? I read another post that said the values were reversed, but if it were maxed out, wouldn't the truck always call for torquelimit based on {B6614}. Sorry for thinking outloud...

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    Okay, just to follow up with what I've learned.
    We "zero'd" out the {B6614} "Max Torque by RPM". Drove the truck and a LOT more power was available. I pulled some logs to review and depending how they look, I will probly change the cells to -640 Nm. I'll report what I find. Hope this helps someone else out with this particular OS.

  4. #4
    Joe (Moderator) joecar's Avatar
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    Ok, thanks for posting back... B6614 set to zero probably means "no limit". Let us know how it changes (if any) when you set it to 640 Nm.

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    hahaha, sooo setting B6614 to "-640" pulls all power and absolutely no response from the accel pedal-truck just idled around till we got back to the parking spot.

    I then set it to "240", just to see what happened. It still had a lot more power, but I dont think it made any more or less than when I set it to zero. I'm attaching the logs in cae anyone is interested. FYI, there was a ton of audible knock occuring( and knock retard definitly kicked in).
    Attached Files Attached Files

  6. #6
    Joe (Moderator) joecar's Avatar
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    Hmmm -640 Nm can use used as valet mode...?!

    I'll take a closer look at your logs regarding KR.

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