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    You need to use V8 from ~Jan 2021 or newer as...

    You need to use V8 from ~Jan 2021 or newer as EFILive has automated the Controller Authorization process, you no longer have to purchase the code for $50. So make sure you're using the latest...
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    GM hasn't used combined PCMs since the late 2000s...

    GM hasn't used combined PCMs since the late 2000s I believe (P12 and LS1B were one of the last ones in 2007), everything newer is ECM + TCM now.

    Per EFILive's website, that's an E98 which the...
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    Flashing to your original stock tune is the same...

    Flashing to your original stock tune is the same thing as removing the current tune from your car. Copy the stock file to your AutoCal, connect to your car, and flash it in.

    Make sure you have...
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    You'll need to work with your tuner directly to...

    You'll need to work with your tuner directly to work through the issues you're having with your tune. There are no "EFILive tunes", EFILive provides software and hardware for tuning only.
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    Yes, if you're able to scan the ECM and read the...

    Yes, if you're able to scan the ECM and read the TCM you'll need to write your own DSP5 tune and use that. Need to source a stock file for your truck and Full Flash it (either as a base OS or DSP5)...
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    I looked at the file, this is an 04 Silverado...

    I looked at the file, this is an 04 Silverado 5.3. The 12606960 OS supersedes 12587603, but is only for 1500/light duty trucks. There isn't a corresponding 2500/HD file with the 4L80E. You'll need to...
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    Glad to hear you got it fixed.

    Glad to hear you got it fixed.
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    Thank you, this information would have been...

    Thank you, this information would have been helpful to know initially.

    If you want to keep this setup, check with PCS as to what TCM OS works with their controller and use that. If you are unable...
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    I don't know about the HSV VZ, but the GTO never...

    I don't know about the HSV VZ, but the GTO never came with the 4L80E in the US. You have to use a non-factory TCM OS to make it run a 4L80E OR change the wiring with an adapter harness. I doubt a...
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    Ok is this a factory vehicle using a...

    Ok is this a factory vehicle using a factory-matched ECM + TCM calibration? If not, the first visual place you'll see issues is with the gear selector being incorrect.

    If it's a swap, need to make...
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    T42s are pretty robust, check all wiring and...

    T42s are pretty robust, check all wiring and fuses for the transmission circuit. If you want to try a new T42, start with a known good file, change the VIN, and Full Flash a base file.
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    1) Yes, Express Vans and S10+Blazers use DBC...

    1) Yes, Express Vans and S10+Blazers use DBC setups. All you need to do is obtain a specific PCM service number that has the IAC drivers to work with a DBC setup and enable the bit in Platform...
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    Post the VIN and/or OS, someone may be able to...

    Post the VIN and/or OS, someone may be able to provide a clean base calibration for you.
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    I believe the answer is yes, FS V3 is designed to...

    I believe the answer is yes, FS V3 is designed to only work with S&T V8.
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    I don't believe the added security changes this,...

    I don't believe the added security changes this, it's still an E92 so this should be possible.

    Do you have EFILive? If so, read the tune out (you'll need a Controller Authorization code to do so),...
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    First step is to buy a wideband, without one,...

    First step is to buy a wideband, without one, you're shooting in the dark as far as what your actual fueling is.

    The 97-98 PCMs are super limited and you have to deal with a Secondary VE table...
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    I'm not that familiar with the E82, so there may...

    I'm not that familiar with the E82, so there may be other scenarios I'm not aware of. The only vehicles I see using this ECM are 3.6L V6s in a few platforms, none of the V6s appear to have AFM. There...
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    Merry Christmas!!

    Merry Christmas!!
  19. I ended up going that route over the summer,...

    I ended up going that route over the summer, ended up buying a Ford Edge. I've owned 3 cars in my life until it, all 3 were Chevrolets.
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    Sticky: COS5 is not available on 1MB PCMs that use...

    COS5 is not available on 1MB PCMs that use green/blue connectors, only 512kb ones that use red/blue.
  21. Can you post a log of it happening as well? I see...

    Can you post a log of it happening as well? I see your TCC lock/unlock appears to be set correctly based on your description. Do you have different tires or gears and have you accounted for them in...
  22. Post your tune and I'll take a look. If it's...

    Post your tune and I'll take a look. If it's staying locked above a certain speed, it's likely due to the TCC lockup table settings. The "hurdle" is getting a truck OS to stay locked at all under 0%...
  23. What vehicle and PCM/TCM? It is a separate...

    What vehicle and PCM/TCM? It is a separate parameter from the TCC lock/unlock tables. I believe all truck OS' unlock at 0% TPS while car OS' stay locked at 0% TPS. Depending on PCM/TCM, the...
  24. Thread: L96?

    by ScarabEpic22
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    711

    I use SPS to tell me what OS' should be used as...

    I use SPS to tell me what OS' should be used as there are some oddballs out there. I looked at 2 2008 2500HD 6L gas VINs, each had a different ECM OS' so you'll need to look the OS up by VIN on SPS...
  25. Thread: L96?

    by ScarabEpic22
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    If all factory, it'll be an LY6 and E38 ECM for...

    If all factory, it'll be an LY6 and E38 ECM for 2008 (L96 is the same just has Flex Fuel).

    A gauge cluster swap shouldn't matter, swapping ECMs that aren't leaned to the BCM or that have VATS...
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