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Thread: Help!!! u0107 code DBW issue that has me stumped

  1. 02-26-2021 #1
    jm8126
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    Lightbulb Help!!! u0107 code DBW issue that has me stumped

    Hello All,

    I just finished an LS swap on my 86 k10. I got everything running good except for one issue. upon hard acceleration, Im getting a u0107 code for "lost communication with throttle actuator control". the truck is going into limp mode. it happens every single time. i have checked every wire for continuity on the throttle body, tac and pedal. all checks good. the pinks all have the right voltage along with the 5 volt ref on the TB. the grounds are all checking out too. i even grounded the PCM separately, i have maybe 4 grounds from block to frame and cab and nothing. i need HELP... pleaseeeeeeeee i thought getting the BMW fan was a pain. this is 10 times worse..

    I just searched the subject. i might have a pedal and tac incompatible with the PCM. the engine is an L33 off a 2006 silverado 4x4. the junkyard lost the OG PCM and gave me one off an 05. how can i update the software on the PCM for the 06 version?
    Last edited by jm8126; 02-26-2021 at 12:55 AM.
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  2. 02-26-2021 #2
    blindsquirrel
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    If the PCM Service Numbers are compatible between '05 & '06, flash it using GM SPS/TIS+Tech2/MDI with a '06 VIN number.
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  3. 02-26-2021 #3
    jm8126
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    Quote Originally Posted by blindsquirrel View Post
    If the PCM Service Numbers are compatible between '05 & '06, flash it using GM SPS/TIS+Tech2/MDI with a '06 VIN number.
    thank you. i will look into that
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  4. 02-26-2021 #4
    2xLS1
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    You can just write entire the 05 PCM with a 06 file. Will cost credits. I have some 06 53 L33 files if you need one. They are in Tunercat format but I could load one in a PCM and read it back out with HP Tuners or you can check the repository for one.
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  5. 03-01-2021 #5
    jm8126
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    Quote Originally Posted by 2xLS1 View Post
    You can just write entire the 05 PCM with a 06 file. Will cost credits. I have some 06 53 L33 files if you need one. They are in Tunercat format but I could load one in a PCM and read it back out with HP Tuners or you can check the repository for one.
    How do I do that?

    I have an 06 file. Is it the hard write? I tried doing it but I might be doing something wrong because it says the vin doesn't match. I'm a newbie on hp tuners.
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  6. 03-02-2021 #6
    jm8126
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    Quote Originally Posted by jm8126 View Post
    How do I do that?

    I have an 06 file. Is it the hard write? I tried doing it but I might be doing something wrong because it says the vin doesn't match. I'm a newbie on hp tuners.
    I figured it out. I paid the credit for the new file and wrote entire. Truck runs amazing. I couldn't be happier. Thank you for pointing me in the right direction. ✅
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