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  1. NiamLeeSin

    2023 GMC Yukon AT4 6.2L dead at 10K miles

    MPG cutting is a problem too. Lifters fail, torque converter shreds its aluminum cover, to meet govt mpg requirements, all at the expense of the end customer. Saves you some gas, but you end up paying GM for parts/repair instead, so they come out ahead.
  2. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Our requirements are 6 seats and can pull the 31' 6k lb trailer in the attached pic. We may either upgrade the Yuke to a sierra 2500/f-250 with front center jump seat, or trade in the trailer and get a class C. The wife and kids are excited about being able to mess around inside a class C while...
  3. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Just an update for anyone interested. I've been on a few long trips (2k miles round trip each) and the weight and drag of the RV makes the truck run at 3k plus RPMs on normal highway in 4th (I think), I never go over 65 mph, yet it doesn't confidently haul this load. Even the thought of...
  4. NiamLeeSin

    What is this tray in the engine bay supposed to hold? (2018 Tahoe Premier RST w/6.2L & 10spd)

    All of the PPV squad cars I've seen at auction have a second battery in this location, assuming it's for all of the additional electronics and lights.
  5. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    I went with Performance Torque Converters of Texas because they were the best value I could find after researching all of these options and calling around. The circle D TC was overkill for my application and costly. PTC of Texas was recommended somewhere else in this forum, I believe. The clutch...
  6. NiamLeeSin

    2015 tahoe tow mirror's

    I bought the k source snap and zap clip on's and I'm quite happy. None of the other aftermarket mirrors have the full functionality of the OEM mirrors, and these clip ons work quite well, no vibration, you can still fold them in while attached. They are a good value and get the job done.
  7. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    You are correct, I wasted a lot of time with the updated cooler bypass. The superior tech delete kit did the trick. Temps are never over 140f. That is with the Mishimoto cooler mind you. I'm still on the fence about a TC upgrade just because the part costs over $1k. Part of me wants to kick...
  8. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    I got the superior tech delete kit. Just now had to put it all back together to drive to harbor freight and get the snap ring pliers for that. What I keep referring to as the TBV bulletin was done with the updated part from the dealer (updated GM housing?) And it didn't seem to help. The...
  9. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    I've read about others who still have high temps despite doing TBV Bulletin. And I think my temps stay high from 180-190. So I'm going to delete it with the shift kit today.
  10. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Yep, subscribed. With your help we can do much more for sure. However, I think basic economics theory implies that you should do transmission rebuilds, and I should do IT, and we should trade. That way we can do more, better.
  11. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Thank you @NickTransmissions Does this one have all of that? https://www.circledspecialties.com/products/gm-300mm-pro-series-6l80-triple-disk-torque-converter Also, I checked out your youtube channel and it's very good. It mainly taught me how much I don't know and where my limits are as a DIY'er.
  12. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Thank you. I reached out to Black Bear and they said my 2016 Yukon requires the Autcal V3 option. They said to swap the torque converter first if that's what I plan to do.
  13. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Okay you talked me into it. You are correct about the DIY time constraints. Also the family can't fit in the secondary vehicle so we can't be without it for long.
  14. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    I'm not sure what the job entails. I have a copy of the service manual and will review, but I don't have a lift and transmission jack. My buddy has a quickjack I could use, but not sure that would work. Mainly I'm worried that I'll create leaks or damage a seal when I put it back together.
  15. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Lots of really good info here, much appreciated. Will you do most of this yourself? I'd love to be able to, but I don't see myself dropping the transmission. Or would you have a mechanic drop the transmission and swap the torque converter, and ship the techm to black bear for tune, then ship...
  16. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    I found some other older info about this: "That is correct, It's cheaper to do a Billet Front Converter, TransGo Tow & Pro kit, And a trans tune/disabling the AFM NOW versus letting it fail." https://bobistheoilguy.com/forums/threads/16-suburban-6l80-thermostat-update.360169/post-6247950
  17. NiamLeeSin

    Advice on wether I should skip this deal or check it out again 2016 Yukon xl denali help a mom out

    Yikes okay. Maybe he traded in for a Sequoia
  18. NiamLeeSin

    Torque converter issues

    @chartersj did you find a way to diy? What kind of vacuum pump? Amy pointers or resources before I attempt this? Thanks!
  19. NiamLeeSin

    Advice on wether I should skip this deal or check it out again 2016 Yukon xl denali help a mom out

    Does your research show value in swapping the torque converter before failure?
  20. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Perfect thanks!
  21. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Thanks for the info. My gut tells me these items require rebuilding or dismantling the transmission to a high extent. Does it make sense to do all of that now, or just wait until it fails? I will do deep pan with plug, but are any of these items within that level of complexity/cost? Which would...
  22. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    @RobH thanks for the Scan Gauge tip. That looks promising, and cool! My problem is that I use the OBD port for the Range AFM disabler, so maybe I need to do the delete instead so I can get a Scan Gauge.
  23. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Thanks for the response and warm welcome! I did see your post and could not sleep for a few nights....and didn't want to jack your thread, so I thought I'd start another thread on preventative measures. @NickTransmissions had some very valuable information in there about what you should expect...
  24. NiamLeeSin

    2016 Yukon/L680 Transmission upgrades for HD TOW 2016 Yukon XL

    Hi all, I just purchased a used 2016 Yukon with 40k miles and HD tow package to be able to pull an 7500 GVWR RV trailer. Due to all the "transmission failure" complaints here, I am worried about the transmission reliability on long trips and if it would be a good idea to upgrade the torque...

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