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  1. J

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

    yeah, I've seen his and a few other videos of guys trying it. I'm sure it can't hurt, don't know that it would really help either. but I saw it on the shelf and impulse bought haha. mines got 163k on it. I didn't look this time, but I've stuck a bore scope down the valve covers and in the...
  2. J

    I put a new 6.0 in my 13 Tahoe a couple of years back. Exhaust question now.

    he's running a higher compression 6.0 off the untouched 5.3 ecm and program? what cam did he use? I would strongly suggest he tunes this truck, atleast a run a few logs thru hptuners go see what's going on. the entire timing calculations are based off airmass, and that bigger engine run at a...
  3. J

    No Go. No Shift. No Gears.

    I would personally fix the leak and go from there. hard to troubleshoot it without the correct level of fluid in it. these autos work basically by hydraulic pressure to everything. without the correct internal line pressure from a lack of fluid. nothing works.
  4. J

    No Go. No Shift. No Gears.

    when you say it leaked it all on the ground? like how much and how fast? I asked cause years and years ago I had a tranny hose blow out on the highway. little blazer with 4l60 I believe they had well highway speeds but was a long 4 miles bridge, not wanting to be stuck in the side of the...
  5. J

    $18K Repair on 2010 Burb? Yup, it made sense.

    what are you trying to do? swap in a direct injection LT manual trans to your tahoe?
  6. J

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

    can't hurt anything I guess. don't know how I'd judge if it did anything haha.
  7. J

    Motor Oil Brand vs Pressure?

    the weight of oil is a range. the thickness can very and still fall within spec to be called say 5 or 10. the ls oil pump is gear to gear, which in theory breaks down oil faster than a vain style, like the LT probably just theory thou. so it's not a stretch to say if you sent 2 different brand...
  8. J

    Can you help me with OBDII code: P0430 ?

    I'm interested to know what they tell you. ask questions if you can. when you say you had the fuel trims reset. what does that mean? not sure I've heard of that in this context. it's something that's done during tuning with programas like hptuners.
  9. J

    2013 YukonXL 2 speed Transfer case change to 1 spd

    if you're looking for a cheap. parts truck. the hybrids all but the first year's Cadillacs have a 3.08 gear axle front and back. it's the smaller sized ring and pinion rear end so you would technically lose some tow rating if you have the larger one now, but if you don't max tow often, not a...
  10. J

    Can you help me with OBDII code: P0430 ?

    it's been talked about here. technically you could call it that. the o2 has a heater circuit in them and the ecm controls that with a pwm ground circuit. it needs what's called a heater reset. but unlike normal module replacement that need progammed using gm's dealer software. when you clear...
  11. J

    Looking to lower power steering boost

    I still feel like if you contacted turn 1 about power steering pump stuff they might have someone like this that could adjust the pressure. https://www.summitracing.com/parts/tn1-301-057?srsltid=AfmBOopTZhCSN9GlRBVzIymDeNvcgP1aGsaSGuW3ajlZKSXxC5bGGtCbGm0 or maybe see if one of the steering...
  12. J

    Oil pump change after AFM/DOD delete?

    I've read the vvt takes more oil volume to operate than the afm. afm basically a dead head system. not much oil flows past anything except thru lifter internal tolerances when active and nothing extra when not in afm mode. also something about an aluminum block gaining more bearing clearance...
  13. J

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

    that's sounds brutal. I wouldn't even want yo ride a bike that long. but a 64 with a 4 speed is a nice car. not in traffic but I'd like to have one today. I was lucky and had the voltage at the time, stole it from the wife. it would do right at half way each way on electric charged at both...
  14. J

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

    I did it for a year and it sucked the life out of me. when I first got a chance to get out of Nola, I bid to Austin thinking it would be nice to be near Cota to go to the motogp and F1 races, maybe a track day. I didn't realize how awful Austin and tx overall was. once I got there I never even...
  15. J

    2013 YukonXL 2 speed Transfer case change to 1 spd

    unless you do a lot of highway driving on flat roads going down ratio isn't going to help a lot. city driving guys seem to say going up in gears makes it's accelerate eaiser and might help fuel a bit. but if you're having a shop change both front and back diff gears, it's pretty expensive. I...
  16. J

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

    ahh not being from there. that all looks like lax to me haha. I feel like north Cali looks nice. had some relatives that lived up in bishop and when we visited it seemed like a nice little mountain town. most big city's kinda suck. everyone I work worth lives atleast an hour drive away...
  17. J

    Yukon Denali issue

    I know that sounds bad, but small upside is it's not intermittent. which makes things even harder to find. atleast at this point of you fix it. you know it's fixed. does the scanner turn on? like it's getting 12v power from the port but can't connect? if so, that's definitely the can bus...
  18. J

    Yukon Denali issue

    so here's that video on the basics of can bus practical troubleshooting. if you have a volt/ohm meter. it would be interesting if you can test for the ohm across the can terminals in the obd2 port. what would tell you if the system is intact.
  19. J

    Yukon Denali issue

    ahh, so that's helpful. I was thinking this was from the first event. so we know the Communications Network is still down, so that's not intermittent or one time thing. since you have that replacement module coming. I hope that fixes it. there's actually 2 networks, I high speed and a low speed...
  20. J

    Yukon Denali issue

    I'm over 165k on mine and the tranny fluid sample tests good. so it would be horrible luck for your tranny to blow up at 140k. so I'll attach what my software says for limp mode for these trucks. I'm hoping you have one of these P code dtc's in your ecm. that would help give some direction as...
  21. J

    Yukon Denali issue

    hmm so just looking ******(you can't type quick ly here? odd word to sensor lol) , I would disregard all the U codes, the network went down forsure. that's about all you can learn from those, and the ones requesting the mil light on. those are generic. the individual modules cants turn on the...
  22. J

    Oil Pressure Sensor Rerouting

    I remember those old mechanical gauges. oil still finds a way thou but they did always have an air bubble in them somewhere.
  23. J

    Yukon Denali issue

    sorry, I probably didn't really answer your question directly. yes, if the sound is forsure coming from the transmission itself, it would seem it's mechanically broken. Whether that's because of a electrical issue or something mechanical broke first inside the tranny when it locked up. I'd just...
  24. J

    Yukon Denali issue

    what I was meaning is I think it shutting off on you a year or so ago could be something different than happened this time. I've never seen an engine damage warning. is that on the dash display? makes me wonder what triggers that warning and how the tranny would make it think the engine is...
  25. J

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

    what city did you live in?

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