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  1. Mogman

    P0218 low fluid?

    OK,,, I was reading the plug upside down, damn things are too symmetrical. pays to take the cover off of the plug and confirm wire color (which I had to do to get the voltage reading) ANYHOO,,, pin 54 the TFT sensor lead reads 2.6K ohms to ground which is pretty damn close to the chart for the...
  2. Mogman

    P0218 low fluid?

    Good point, could be the pull up resistor in the TCM is open
  3. Mogman

    P0218 low fluid?

    The measurement was taken at the TCM connector so that would include all of the harness.
  4. Mogman

    P0218 low fluid?

    As I see it the higher end means nothing, I am getting an over-temp code at room temperature, according to the ohm meter the TCM should think the temp is 5 deg F, not saying it does not need a new temp sensor it just seems unlikely that is why I am getting a high temp code at room temperature, I...
  5. Mogman

    P0218 low fluid?

    I am measuring 20K ohms from the TCM pin 54 (TFT sensor) to ground, anyone know if that is in the ballpark for a room temp. trans. EDIT, found a ohms list, according to that list 20K should be about 5 deg F so I definitely should not be getting a high temp code.
  6. Mogman

    P0218 low fluid?

    May have to resort to that, is an expensive route though
  7. Mogman

    P0218 low fluid?

    I am chasing a P0218 high transmission fluid code, If I clear it, it comes back right away (stone cold) and I have not observed the fluid from the cooler any higher than 160 deg. so far in my very limited testing of this conversion. I see that one of the causes can be low fluid, I understand how...
  8. Mogman

    LMM code U0073?

    Thanks, still some great troubleshooting tips!!
  9. Mogman

    LMM code U0073?

    Well,,, I was using my trusty old Autel to read the codes, all it showed was the U0073, switched to the EFILive box and it shows some TCM codes, may be why I am bumping my head here, the Autel showed TCM codes before when I had a bad return in the harness for the temp and Mode sensor so I am...
  10. Mogman

    LMM code U0073?

    The reason load resistors are used on serial buses is to make the circuit appear to be low impedance, low impedance circuits are less subject to being influenced by external electromagnetic interference, it makes perfect sense to put a load resistor at the for end of a long line to be sure that...
  11. Mogman

    LMM code U0073?

    I have re-installed the glow plug controller, I still measure 120 Ohms, I added a 120 Ohm resistor to the bus (with and without the glow plug controller installed) and it made no difference, I was a SCADA and communications technition for almost 40 years so I understand a little about serial...
  12. Mogman

    LMM code U0073?

    I may have started with a crap tune, you never know what you are really getting when you download a tune from a library, I was working with a guy to try and get the idle to not sound so choked off and the files in my tune did not all jive with the guy helping me LMM files so when I get a chance...
  13. Mogman

    LMM code U0073?

    Not sure what that means?
  14. Mogman

    LMM code U0073?

    There is no BCM plug, this is a stand alone harness
  15. Mogman

    LMM code U0073?

    Thanks for the reply, I will have to see if I can see on the prints what is terminated to what, I have a ECM, TCM and TCCM along with the DLC on that bus. I do see 120 ohms on the bus so there is a termination somewhere, I also tried loading down the bus with another 120 ohms did not work. It...
  16. Mogman

    Code P0090

    Thanks for the response, I figured it was something to do with the turbo position control but have no clue where to start, I will poke around in the tune and see if I can get a clue! EDIT, gee there is allot to look at under boost control and I am not even sure I am in the right place.
  17. Mogman

    Code P0090

    It looks like the only code I am chasing now is the U0073 which is likely an issue with the stand alone harness so I am posting this on the transplant forum, THANKS for the help!!!
  18. Mogman

    LMM code U0073?

    Has anyone had a U0073 "communications bus off" after installing a Duramax with a stand alone harness? After doing some reading it appears to possibly be a resistance issue because of the missing BCM/GP controller etc. I measure 120 ohms on the serial bus which is what I would think would be...
  19. Mogman

    Code P0090

    Well,, I did a full flash with a "stock" tune I got from a library and did the obvious deletes and now have two issues. Before the flash when the engine was started the exhaust would sound very restricted, then after about 3 seconds or so it would "open up" and sound nice and throaty, it now...
  20. Mogman

    Code P0090

    Here is the link, this swap is fairly well known and there are even kits to do it, but because I am hard headed and on a fixed income (retired thanks to the reaction to SARS-COV-2) and did not really care for how some of the conversions were done I decided to take my own route and see where it...
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