Search results

Search the forum Search Articles
  1. P

    high pressure fuel leak

    well i did have a hole in my downpipe and 1 up pipe, which i fixed back in december. so i do not think there is any leaks there. honestly , the leak/smell happens so infrequently i sort of forgot about it, but recently i noticed it again which is making me want to start looking for it been...
  2. P

    high pressure fuel leak

    LBZ with dual fuelers. if i drive the truck normal or like a grandpa, everything is fine no issues whatsoever. if i get on it a little bit, when I get to my destination, i'll get a whiff of raw diesel. its most notable on the driver side. obviously thats also the side where the second CP3...
  3. P

    can someone bring me up to speed on tuning?

    funny you mention that, i actually have a callaway tahoe, 6.2 with a supercharger- tons of fun. and gets 26 mpg on the open road cruising at 78
  4. P

    can someone bring me up to speed on tuning?

    well originally i wanted like a 2018-2019 denali 2500 diesel. i liked the body style. i wasnt exactly keen on the 15 lml, but this one popped up at a good deal. i never towed much, but i used to do alot of highway driving for my job, and i just loved the diesel out on the highway. since...
  5. P

    can someone bring me up to speed on tuning?

    I was trying to search up some of the places i remembered, looks like most of them are gone. does look like PPEI is offering emissions compliant tuning for the LML. thats where im torn, id like the newer cabs and interiors, but i know i'll likely be going way down on power. and with...
  6. P

    can someone bring me up to speed on tuning?

    so i havent really paid much attention to the duramax world for a few years- but from what i am seeming to find, most of the shops got shut down by the EPA, there is no more delete tuning available? i got my LBZ where i wanted it in 2013, and have just enjoyed it. fixed all the rust on it...
  7. P

    S400 downpipe

    Question- can the s400 downpipe be removed without removing the up pipe? I have a wild guess the answer is no but thought I’d ask before I tear into it tomorrow. Just looking at the bend at the back of the turbo it looks to wide to fit between the firewall. I have profab manifolds and up...
  8. P

    Possible leaking injector?

    Truck is an LBZ with 235,000 miles on it. Put new delco in it at 194k, but 9 years ago. I don’t drive the truck much anymore. I have 40 over tips on them. P About 4 months ago I popped a glow plug code. #6. Pulled it and changed it. That particular glow plug was covered in black oily fuel...
  9. P

    anyway to unlock efi live tune

    So yes my question was specific to the tune not the ECM. not that I have an immediate need, but I was thinking along the lines of if I wanted to change tire sizes I can’t now without paying someone to completely redo my tuning. Which kinda sucks cuz I have no complaints about my tuning
  10. P

    anyway to unlock efi live tune

    maybe a dumb question, but if your tuner locked their tune, and now they have gone out of business, is there going to be anyway to unlock it?
  11. P

    could low fluid cause limp mode

    Just wrapping up that was def my issue. Caught it just in time as no wires were completely broken. Taped everything up and secured it away from the exhaust and no issues. Put roughly 50 miles on it
  12. P

    could low fluid cause limp mode

    Think I may have found my issue. Finally got a chance to look under the truck. Somehow 2 of my wiring harness clamps broke and the main harness was loose. It moved over and touched the drivers side exhaust manifold. I didn’t have a lot of time to look at it but I can see it was clearly touching...
  13. P

    could low fluid cause limp mode

    you mean check it at PIN 71 at the TCM? Or can I use my scan tool(tech 2) to check trans voltage?
  14. P

    could low fluid cause limp mode

    Ok bumping up since I have more info now truck has been sporadically throwing the code since I posted but yesterday it def seems to be getting worse. last night didn’t even make it a mile before it went into limp mode Checking codes now I have The same 979 but now I also have 2670 showing...
  15. P

    could low fluid cause limp mode

    Ok it did it again and I managed to get a code po979. Shift solenoid C if my googling is correct?
  16. P

    could low fluid cause limp mode

    Ok had time to look at it tonight. started truck up went for a drive. No issues trans shifted perfectly normal. I got the trans temp up to 186. Checked fluid. Low. at that temp it was JUST above the cold hash mark area. I added fluid and it was dead even with the hot hash marks. Is that a...
  17. P

    could low fluid cause limp mode

    trans gauge on the dash was right in the middle. I did look at my scan gauge and I want to say it was like 175ish. it was not right below the Hot area, it was definitely much lower. I know I'm an idiot for clearing it now that I had time to think. in the moment all I was thinking about was...
  18. P

    could low fluid cause limp mode

    Haven't been around much lately, but still have my 07 LBZ. have a built allison that has given me zero issues for years. today i had to run to a couple meetings, leave in the truck all is well, when I come out of the first meeting driving to the second, i notice my check engine light is on...
  19. P

    Decided to install a Fluidampr

    Yup truck is still just like my sig. been DDing the 466 for 4 years never had an issue.
  20. P

    Decided to install a Fluidampr

    So i was on here digging through my old posts looking for info an stumbled on this. just wanted to report that after 4 years and 30k miles my fluidampr balancer hasn't done any harm to my crankshaft. dont put nearly as many miles on as I used to but still driving the truck everyday.
Top Bottom