Recent content by JimmyMac

  1. J

    LMM: Electrical issues again

    Different problem - Simmar issues For some time I have been receiving strange status displays. Started with “Range Shift Inhibit” and resulted in complete losses of movement. Let it cool off for 12 hrs and took it if orvservice. Worked ok for about a year, happened again in St Louis (raining...
  2. J

    LB7: Electrical issues

    2006 GMC Sierra 2500HD 4x4 Crew Cab Duramax w/Allison transmission. Most of you are on track - Thanks. TheBac was the closest. Had AMP steps installed 11 Years ago and the installer did not adequately waterproof the connector. Dried off, cleaned it up, weatherproofed it, and back on the road...
  3. J

    LB7: Electrical issues

    No codes, but displays "passenger door ajar" and "right rear door ajar". Curtesy lamp will not go out (except with switch), AMP steps will not retract, auto lock does not work on right side, and alarm will not sound a verification when activated. Checked fuses and connectors, did not locate...
  4. J

    Allison 5sp: range shift inhibited just free revs

    This is a bit late to reply, but I encountered the same problem. On at least two occasions I was pulling a trailer in the rain. Brought it to an Allison shop in St Lewis. The problem was diagnosed to a connector at the lower front of the transmission. The "seal" was compromised when I had...
  5. J

    Help me diagnose

    Agreed, however I understood there was no codes that would indicate an injector failure Sent from my iPad using Tapatalk
  6. J

    Help me diagnose

    If it runs on either, you have a fuel problem. Pressure or air. Don't use the either to much, or you will be creating more issues. Recently my 2006 had the same symptoms - cranks, starts on either, sometimes runs for 2-5 seconds, no codes. Would run for 2 minutes when I primed the pump...
  7. J

    Lift Pump Question

    I had similar issues. It was recommended to replace the filter head, but no one could prove it was faulty. I install the FASS 150, no issues, and my mileage came up (only a small amount - less than 1mpg). Starts every time within less than a second Sent from my iPad using Tapatalk
  8. J

    Crank no start

    Had the same issue on my 06. Replaced the blender valve with a CNC, but that did not resolve the issue. Found there is no pump at the tank, only at the head of the injectors. Relays on vacuumed to pull the fuel to the cp3. Local repair suggested replacing the cp3, however could not confirm that...
  9. J

    Maybe this will help someone

    You are the man Had the exact same symptoms, finally gave up and towed it to a shop. After reading your post, I went out and bought the part ($16 vrs. $3) and asked the mechanic to give it a try. Fixed the problem - who would have thought. Thanks for the clue. Sent from my iPad using Tapatalk
  10. J

    LLY: 2006 6.6 won't start

    Get fuel at the primer, also at the rail. Shot of either in the air intake, kicks over but will still not run Sent from my iPad using Tapatalk
  11. J

    LLY: 2006 6.6 won't start

    Checked all fuses, no codes, fuel at the rails, starts with either, but will not run. Gauges will not work unless running Any thoughts Sent from my iPad using Tapatalk
  12. J

    LBZ: Turbo issues

    Thanks for the suggestions. Initial findings did not locate a leak, but I will check further. Thanks for the feedback on the oil, that eliminates a big concern Sent from my iPad using Tapatalk
  13. J

    LBZ: Turbo issues

    Follow up - No diagnostic codes detected Sent from my iPad using Tapatalk
  14. J

    LBZ: Turbo issues

    2006 GMC Sierra 2500HD 6.6 TD. Only have 8.1 PSI max @2500 RPM. 1-2 PSI @ idle. Oil residue in tube, black smoke when I accelerate. Thinking I may have a seal leak, or need to replace. Have not broke onto it to ascertain the status of the vanes. Any suggestions would be appreciated, even hints...
  15. J

    Shocks

    There seems to be the two 5100 models available: lifted, and adjustable which one would recommend? Some have stated the Blistene are rough riding do you agree? Sent from my iPad using Tapatalk
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