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    Why don't you ask here? --->...

    Why don't you ask here? ---> https://www.mechman.com/contact/
  2. There is nothing whatsoever in the GM service...

    There is nothing whatsoever in the GM service manuals about a valet mode for a 2006 GTO.
  3. What vehicle did the core ECM come from? If it's...

    What vehicle did the core ECM come from? If it's anything other than another GMT360 platform, it cannot be done with HPT anyway no matter how many credits because of the built-in TAC section that HPT...
  4. It's not impossible it's got a dead output pin,...

    It's not impossible it's got a dead output pin, just unlikely. They've come a long ways from the old 1227730s ... yes, I replaced enough of them that 20 years (edit: more like 30? Jesus...) later I...
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    Probing 'unused' ECM pins

    I'm building a bench harness to go a-pokin' around at unused pins to see if anything interesting shows up. Don't want to fry anything if I can help it. Anybody have safety tips? I don't know how...
  6. And I forgot about the C6 Corvette, that one went...

    And I forgot about the C6 Corvette, that one went straight from E40 in '05 to E38 in '06. Derp.
  7. It should work... there are platforms...

    It should work... there are platforms (Trailblazer) that used the E40 and then in later years switched to E67, the class2 messaging between HVAC & ECM didn't change when the ECM changed. Then, there...
  8. I would double check with a different scan tool,...

    I would double check with a different scan tool, if it reads correct numbers then open a support ticket. They can fix this kind of thing but it helps to know first whether it's a vehicle problem or a...
  9. Dunno if you've got diagrams for one of the cars...

    Dunno if you've got diagrams for one of the cars that came with the SPAL fan or not, but there's no relay needed at all like the Trailblazer had. Just straight from C1 pin 36 right to the signal wire...
  10. (way o/t) Stock replacement carb fuel pumps these days...

    Silly question. Is it possible to buy a stock, engine-mounted mechanical fuel pump these days that doesn't make 14-18 psi? I realize the Chinese factory that makes all of them for everybody doesn't...
  11. In your table(s), 0%-14% is OFF, 15% it runs at...

    In your table(s), 0%-14% is OFF, 15% it runs at minimum. 90% is full speed.
  12. Ha! Hardly. I just have experience with replacing...

    Ha! Hardly. I just have experience with replacing hundreds of failed EV clutches on Trailblazers in my former life as a dealership tech, and I currently own an '06 Envoy with the 14" C7 Vette SPAL...
  13. It doesn't use trans temp for any of the fan...

    It doesn't use trans temp for any of the fan tables, only ECT & AC high-side pressure, and those are independent - it uses the higher of the two at whatever point in time. So, if there's no AC sensor...
  14. Nope, Lingenfelter box only goes the other way. ...

    Nope, Lingenfelter box only goes the other way.

    https://www.lingenfelter.com/product/L460065397.html
  15. Yes, you can use a SSR M6 file*. Yes you can just...

    Yes, you can use a SSR M6 file*. Yes you can just change the settings in the SSR file to use the EV clutch instead of discrete. The trigger wire for the SSR fan low speed relay is C1 pin 36, control...
  16. Oh, I like the idea of the EV fan too, it's just...

    Oh, I like the idea of the EV fan too, it's just the way it should work in theory doesn't match up with reality.

    You should look at the 19" brushless fan from CTS-V/Camaro SS. Speed controller is...
  17. E40 is technically a Gen3, or Gen 3-1/2, but...

    E40 is technically a Gen3, or Gen 3-1/2, but 'round these parts E40 stuff goes in the Gen4 section.

    I think you'll be mighty disappointed with the electro-viscous clutch. They are fail-prone,...
  18. System > General > Vehicle > System Options > ETC...

    System > General > Vehicle > System Options > ETC column: 0 = Not Fitted, 1 = Fitted
  19. https://www.google.com/search?tbs=li:1&q=site:hptu...

    https://www.google.com/search?tbs=li:1&q=site:hptuners.com+gmpp+pwm
  20. Actually a further detail, instead of just key-on...

    Actually a further detail, instead of just key-on while measuring voltage drop, the coils should be firing, meaning check it while cranking. It maybe isn't obvious but the less current being pushed...
  21. No sir, you didn't do a voltage drop test, you...

    No sir, you didn't do a voltage drop test, you were just straight out measuring voltage, and a voltage test doesn't show the small numbers you need to pin down a high resistance issue, if that's what...
  22. I don't see any S10 in the repository with that...

    I don't see any S10 in the repository with that OS. Anyway, if they are the same what segment would you swap??

    2002 'K' Silverado LM7
  23. 2GCEK19T221363328 is a 2002 'K' (4WD) Silverado...

    2GCEK19T221363328 is a 2002 'K' (4WD) Silverado w/ LM7. Rockauto says they use the same Service Number.
  24. Err, pretend that anywhere I said 'P59' I really...

    Err, pretend that anywhere I said 'P59' I really meant 'P01'. What a weird autocorrect thing to happen, huh? :o
  25. So go find stock tunes in the repository and...

    So go find stock tunes in the repository and compare the OS numbers between your truck and a '02 Silverado. If they're the same, and all the Calibration IDs in the right column are the same, then the...
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