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  1. juddski88

    1/8 mile discussion and time slips post here!

    Welcome Andre, and I can only imagine what has been achieved and not posted about out of the S&S camp....
  2. juddski88

    Lbz GPCM delete

    If you buy the module from him, all you really need to do is transfer the fuel injector flow rate codes over from your ecm. Not an intensive process. But the reason I posted in this thread, is because you have not actually done enough diag to prove that the gpcm is the issue.
  3. juddski88

    Lbz GPCM delete

    A good mdi2 clone is a couple hundred bucks, a good tech2 clone is a little more. Then you can get a short term subscription to techline for dealer level support. If you don't want to do that, we can help find a reputable shop nearby that can help you. Service info and diagnostic procedures for...
  4. juddski88

    E35B Post-Flash Issue - Am I alone?

    Did some more messing around with this truck today. Installed new bcm and updated it with SPS. No more short to ground on the HS Canbus with key off. Updated the ECM with SPS. Communications with the ECM to and from other modules was immediate, truck started. Read out the new ECM file with EFI...
  5. juddski88

    LBZ: glow plug delete

    You can get cheap diagrams on alldatadiy. You can get some free diagrams and pinouts on gmupfitter. You can get factory service info right from techline connect, as well as access to factory canbus diag software if you have a good pass through device
  6. juddski88

    Lbz GPCM delete

    Have you tried following the diag procedure for communicating with the gpcm?
  7. juddski88

    E35B Post-Flash Issue - Am I alone?

    I still have a lot to learn about databus systems. I was comparing my findings to what the diagnostic procedure was telling me I should be seeing. The 5000 ohms didn't bother me much because it was consistent with what I was seeing in a couple of the other truck I had here to compare to. The...
  8. juddski88

    E35B Post-Flash Issue - Am I alone?

    Another update: The truck with Canbus issues ended up needing a new TCCM and new VCIM to resolve shorts to ground on the high side circuit of the HSCan. The other truck, I assumed had no Canbus issues because I was able to communicate with every module fine until an ecm file flash, acrually...
  9. juddski88

    LBZ won't hold rail pressure at idle

    You can get schematics and pinouts from alldata or gmupfitter. Procedure is buy a loadpro and have a good multimeter, disconnect the circuits you need to test at both ends, hook one end to 12v, put the loadpro in series at the other end to ground. Press the button on the loadpro and watch for...
  10. juddski88

    LBZ won't hold rail pressure at idle

    Yeah you've got some wiring issues. Load test
  11. juddski88

    LBZ won't hold rail pressure at idle

    I have a had several LBZs that the ECM had defaulted to commanding the last known good value and stayed like that until the wiring issue was resolved. The ecm will not always report rail pressure has maxed out when the FPR is unplugged. The OP needs to load test each part of the circuit from the...
  12. juddski88

    Danville Stg2r Drive Pressure vs RPM's

    There are several great machine shops in PA and OH that can take care of you. Miller Race Engines is not terribly far and would be my first choice in that area.
  13. juddski88

    E35B Post-Flash Issue - Am I alone?

    Quick update: the truck without the CANbus issues that wouldn't start after the flash ended up being a coincidence also. Lucky me.. The UBEC panel had some loose female sockets and the DLIS circuit was open and there was an partial open in the power train relay circuit. Still haven't resolved...
  14. juddski88

    BCM data link

    What year truck?
  15. juddski88

    E35B Post-Flash Issue - Am I alone?

    I've had over a dozen lmms in this past 6 months with broken wires in the body harness through the firewall to the fuse box. Some are beat, some are low mileage and well cared for, but none of those were data bus issues. On the truck I have with CANbus issues. I started with checking...
  16. juddski88

    E35B Post-Flash Issue - Am I alone?

    Nothing aftermarket in either truck that I've found. Unhooking the batteries in one of the trucks didn't do anything, however, I went to the other one (the one with Canbus issues) and it fired right up first try today...so...yeah... It seems like either a CANbus issue, or weak immobilizer or...
  17. juddski88

    E35B Post-Flash Issue - Am I alone?

    Yesterday I flashed 2 E35Bs, both flashed in a truck that has had successful flashes recently since the other truck is experiencing Canbus issues. Both Ecms flashed successfully, both were just receiving minor table changes. Now neither ecm will allow the truck to crank due to theft deterrent...
  18. juddski88

    05 LLY communication issues

    For free, good, fast reference diagrams, download the Carmin App on your phone.
  19. juddski88

    Starter is grinding intermittently.

    No special tools needed
  20. juddski88

    LLY FICM

    What is the difference in resistance on the data bus between the two?
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