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  1. J

    Oil Level -- can't get good reading

    why does it have a vent and 2 hoses? this looks like race car stuff, site is full of 7sec turbo engines. they require a total difference level of equipment. but if you have the money, pick one up and let us know how the vent works? because if you allow a vac leak of any kind, you see it in the...
  2. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Yes
  3. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    nope, same engine block as far as I know. it's basically an ls2 with a weird valve timing cam shaft which is why it has more compression. I feel like ls swap guys don't know about these. you can can find them from time to time sold super cheap when someone is just over the truck because a...
  4. J

    Oil Level -- can't get good reading

    what's mighty mouse and why would they be an expert at old worn out stock engines?
  5. J

    Odd problem, rear glass will open when opening tailgate

    I can see where that would be very annoying. I got nothing, but maybe pull a fuse or something to disable it.
  6. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    yeah, I saw a youtuber putting one in a miata. seemed like a nice little setup. but you're probably right about cost. Just didn't make sense to the bean counters.
  7. J

    GMT900 Hybrid 42V Part availability

    if you know what you're getting into, it can be an interesting platform. I'd say order a clone tech 2 for the ride home. plus a 30$.Bluetooth dongle and the added pids. set up so you can ****** pull up the hybrid battery data. it's interesting while driving. also. tune out the afm as soon as...
  8. J

    Towing Heavy Transmission Temps

    towing sounds like it's own special tuning thing, since you're at wot loads but only part throttle and there for a very long time. the airplane engine is probably a good comparison plus it has the required sensors. those exhaust gas Temps and cylinder head temp would probably tell an interesting...
  9. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    only thing I can think of was they didn't have a 4.8 in aluminum already in the parts bin? I do believe there was a aluminum 5.3 at some point thou. but yeah, no idea unless it was a marketing desions. it was sorta marketed as a do all no compromise hybrid, which in 2008 was pretty ahead of its...
  10. J

    Post New Transmission: Infamous Clunks

    on a side note, if you are stuck and want to flash the oem tranny tune yourself, you can do it for 150$ dongle, a newer computer with enough specs for the acdelco website and 40$ for their license fee. I've done it, it wasn't bad besides gm website being glitches at times. way eaiser than any...
  11. J

    Post New Transmission: Infamous Clunks

    yeah, I was going to say, who ever tuned it can flash it back to stock as a test right? you don't have to have a dealer do it. it would also tell you if the tcm was replaced or not. as the new one would need to be re credited?
  12. J

    Towing Heavy Transmission Temps

    my only thing would be if the tranny pump running at a higher rpm is causing more heat? but I know nothing about the subject really. it's a big ask to get logs and try to adjust timing and fuel a bit in 4th to see if anything helps while towing. one of the founding fathers of prom tuning...
  13. J

    Post New Transmission: Infamous Clunks

    I'm curious who tuned the tranmission?
  14. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    edit* I'd love for hp tuners to be able to do it. I have it and the ecm is unlocked but there's not much defined in there, very basic stuff. I only really did it for afm disable but I do have a test timing table in it right now too. the ecm on a normal truck kinda runs the show, on a hybrid the...
  15. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    it's a very long story but basically I'm just testing stuff. in theory it would make a big difference in mpg, but on the other hand these aren't plug in hybrids. there's no free lunch, the only real things that lead to more efficiency is the type of cam design run in the engine, the engine...
  16. J

    Oil Level -- can't get good reading

    who here said anything about a vented can? the can everyone uses is 35$ on Amazon and like 15mins to install. do that and see what happens and go from there.
  17. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    oh haha. it's a hybrid thing, if the hood is open the truck doesn't go into auto stop, the engine runs while the hood is open. it's mentioned a lot over the years as a way to bypass aurostop on the different hybrid groups. but since it's a bit extra, you need the diagram to sort it out so it...
  18. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    wired in a toggle switch inline with my hood adjar switch so I can tell the ecm the hood is open when it's not without setting a fault code. seemed to work on the first test drive.
  19. J

    Oil Level -- can't get good reading

    flat ground.. let it set for a good 5mins or so. pull stick and read the lowest reading. meaning the lowest spot that doesn't have oil. front or back, sometimes sticks go in engines at odd angles and you'll see oil on half the stick high and dry spots lower. you can also make twist it 180 and...
  20. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    I feel like you might need a month description to all data for this one. that's a lot of stuff
  21. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    if the abs module is under the truck around the drivers seat area on normal ones, there's a ground hidden down there for it somewhere too
  22. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    I don't believe a sensor input missing is going to keep the tech 2 from accessing the abs module. that's either power, ground or can bus lines to it. I feel like it should also had the ecm throwing a code that it has lost communication, but that might just be my system. since there's over 30...
  23. J

    Oil filter for the 5.3

    it's all basically cardboard of different quality levels but these days there's like 3 or 4 different levels of fram. the highest one basically comes in 1st or 2nd in every decent filter test. usually amsoil being the other good one at 2 to 3 times the price plus no one carries them. you can...
  24. J

    Oil filter for the 5.3

    fe10575 is what I use lately. supposed to there top one and a little longer than stock but not enough to hang below the pan.
  25. J

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    dumb question but was the CANdi module hooked up?

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