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Type: Posts; User: MountainTune

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    Looking for 5.3L L33 stock tune

    Looking to flash a P59 ECM with OS 12613246 where the VIN digit #8 is a B. The truck is a 2006 4x4 sierra, 5.3L L33. It is new to me and could not communicate with original ECM to pull the file....
  2. Hey Dr. Mike, I may be a good guinea pig. The...

    Hey Dr. Mike,
    I may be a good guinea pig. The truck I’m working on has an L33 from ‘06. The PCM corroded and died, so I have bought a replacement now as well a 30-0300. Would you ship to Canada?...
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    Sticky: Hello. Happy to be here, lots to learn. So far I...

    Hello. Happy to be here, lots to learn. So far I have used HPTuners when I found a 2002 5.7L Express that needed a new 0411 PCM. Now I'm troubleshooting a 2005 Sierra with an L33 that won't start....
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