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  1. R

    LMM: ECM P2510 ECM Relay code HELP!!

    See post #2
  2. R

    LMM Blowing DLIS fuse

    Yes, the ignition switch or circuit is bad. TEST to make sure before buying parts.
  3. R

    LMM Blowing DLIS fuse

    34 DLIS Fuse 2A powers the Ignition Switch and Theft Deterrent Module (TDM) My WAG is the ignition switch or wiring circuit
  4. R

    P0088, P0191

    Those are both circuit codes See the attachments. Intermittent problems are hard to find - just need the right way to get them to act up.
  5. R

    2007 Lmm rebuilt motor, will not run

    Connector sensor diagrams
  6. R

    2007 Lmm rebuilt motor, will not run

    See attaehment
  7. R

    Coolant flush on the LMM

    4 new high-quality tires properly balanced sure make it seem like you have a new truck, at a much smaller price. Hard choice to be sure.
  8. R

    LML fueling

    MAF, MAT, ECT, etc all the usual suspects. How's the boost? If you demand full fuel pressure with your scanner, will it max out the actual fuel pressure?
  9. R

    No ecm tcm or gpcm

    So if TCM is connected thru CANBUS but your scanner cannot communicate with it, it has power and ground, then I am with James on post #2.
  10. R

    No ecm tcm or gpcm

    I don't think you will see the TCM with a scanner if the CANBUS connection at the TCM has been wired around.
  11. R

    L5P will barely start, then die Please Help

    https://www.duramaxdiesels.com/forum/threads/oil-prime.90198/#post-1237338 Last post
  12. R

    Coolant flush on the LMM

    It is surprising how much stuff can make its way through the other devices and end up on the radiator. I think you will be happy with the work that you have done.
  13. R

    Coolant flush on the LMM

    Maybe some help in the pictures
  14. R

    Wiring Issues

    https://www.dtcdecode.com/Chevrolet/P1226
  15. R

    Looking for some help figuring out what is going on

    https://static.nhtsa.gov/odi/tsbs/2015/MC-10113715-9999.pdf
  16. R

    Looking for some help figuring out what is going on

    Download the electrical manual here: Note that the manual covers 2003-2006 https://www.gmupfitter.com/wp-content/uploads/2021/05/2006_LD_CKFullSizeElectrical.pdf
  17. R

    L5P will barely start, then die Please Help

    Looks like progress. So it runs, does it run evenly at idle? Rev up OK?
  18. R

    Battery Issues

    They used the correct procedure to test a battery. They aren't testing to see if someone charged it up, they are testing to see if it will produce the stated electrical capacity at the proper battery voltage. You may have another problem with the battery, maybe something is drawing it down...
  19. R

    Start and die

    And put your battery on a charger overnight.
  20. R

    L5P will barely start, then die Please Help

    Heat it up, then pull.
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