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  1. I may be OK. If the T43 is not sending the...

    I may be OK. If the T43 is not sending the vehicle speed over the bus to the ECM, then it looks like the E67 does accept VSS input directly on the C3 connector ( in Cadillac CTS-V configs). So, as...
  2. So I just unplugged the output shaft speed sensor...

    So I just unplugged the output shaft speed sensor on my transfer case, as this will go away once I switch to the 6L80/T43, and my speedometer quit working. I somehow hope the T43 is sending vehicle...
  3. OK, thank you for responding. I have a...

    OK, thank you for responding. I have a commercial subscription to AllData, so I can quickly pull wiring diagrams for everything and have done so for both my truck and the 2009 Escalade of which the...
  4. Bringing this back from hibernation again because...

    Bringing this back from hibernation again because I am doing it now. 400ss, thank you so much for your input on this, because of this thread I am now upgrading the 4L60e in my 2009 Colorado factory...
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    Awesome, thanks. Mine is a 2009, and VVT did not...

    Awesome, thanks. Mine is a 2009, and VVT did not start until 2010, so I’m not sure how to solve that issue. Easy to add wires and terminals, but from an operation perspective.....? If I run 2010...
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    I’m sorry my reply was so late. Can I ask what...

    I’m sorry my reply was so late. Can I ask what the cost to do so was? You are now running an L9H using an E67, correct? Do you have VVT operational?

    Thanks.
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    This is good info, thanks. How are you...

    This is good info, thanks. How are you confirming it? I really need to do this on E67.
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    Same here. I’m doing L9H into 09’ Colorado V8. ...

    Same here. I’m doing L9H into 09’ Colorado V8. Is your Colorado V8 to begin with? Colorado is E67, L9H is not...
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    Understood, thanks. This would be the "firmware"...

    Understood, thanks. This would be the "firmware" then. Seems the T63 controller of the 6L80e changed at the same model year mark (except Camero), possibly indicating a GM communication protocol...
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    Thank for you quick reply. If the operating...

    Thank for you quick reply. If the operating system is already on the new E67 bought from a dealer parts dept, then I get it. If the E67 comes blank from the parts dept, and needs an OS slammed into...
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    E67 Differences? 2009 vs 2010-2012

    Dealer reporting different E67 part number used for 2009 Colorado V8 vs 2010-2012 model. ECM service part numbers 12636659 vs 12678513, respectively. Does anybody know what the difference is? I...
  12. Hi.

    Hi.
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    2009 E67 VVT Capable, or 2010+ only?

    Hi all. I have spent a ton of time researching, and have a few questions outstanding. Checking path suggestions to perform what I want to do. Appreciate your input before I continue to purchase...
  14. T43 2007-2009 OS Reflash Compatibility Question

    Hi all. Great site, first off thank you for all of your input, it really creates an amazing knowledgebase with enormous benefits. I am anxious to contribute once I learn myself.

    I am...
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    Even if using the proper GM MDI and subscription,...

    Even if using the proper GM MDI and subscription, it may not accept it I think? My reasoning here is that I believe there are 2 different T43 part numbers, one for 2007-2009, and one for 2010 and...
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    2012 6L80e Backdate With Older T43 OK?

    Hi all. Have done some deep diving, and mostly come up with the same story, but there was one exception, so now my confidence is dented.

    I have a good buy lined up on a 2012 6L80e 4x4 trans, but...
  17. Thank you for the fast, polite, and informative...

    Thank you for the fast, polite, and informative response. I did not expect an answer in less than 24 hours, especially for being a first time member and poster. I really appreciate it.

    The 2009...
  18. 2009 Colorado Facotry V8 5.3L (LH8) to 6.2L (L92) and 6L80e?

    Hello all and thank you in advance for this site and the tremendous support. Being new, I don't have much to bring to the table, yet. I apologize in advance for that.

    I recently purchased a 2009...
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