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  1. NickTransmissions

    07 4L60E trans question

    Search 'Autel Scanner' on Amazon and review the different options that come up in the search The TCC regulator valve is the valve...Fitzall is a company that makes updated/corrective valving that replaces the factory valving in that location in the valve body...The problem with the factory...
  2. NickTransmissions

    07 4L60E trans question

    Id invest in one. Autel is prob the best bang for your buck and should give you all the capabilities you need as a DYIer. Not having a scan tool puts you at a huge disadvantage; they typically pay for themselves in one to three uses vs going to a shop to have them use their scanners and charging...
  3. NickTransmissions

    07 4L60E trans question

    I'd listen to your friend less; a lot less - at least when it comes to transmissions. Do you have a bidirectional scan tool?
  4. NickTransmissions

    07 4L60E trans question

    How exactly did you acquire this "understanding" about new fluid?
  5. NickTransmissions

    07 Suburban C0379 , P0756 Trans in limp

    Take it out and completely go through it yourself or have a competent shop do it (obviously a diff one than last time). Refer to my 4L60E information thread for guidance, parts selection and other tips/pointers...
  6. NickTransmissions

    05 Yukon SLT Autoride

    Agree w/ @rockola1971 - check fluid levels and TCase...Your symptoms sound like 3-4 clutch failure, which accounts for roughly 85-90% of all 4L60E transmission failures. I've never been in 4L in my 03 Z71 outside of occasional rough trail use so never got it anywhere near fast enough to shift...
  7. NickTransmissions

    No forward gears, but revers works after loud clunk at nearly WOT.

    You're welcome, Sam... I do the same for my customers if they have a fluke failure like yours after overhaul...I only do bench jobs so they'd bring back the transmission to me and I'd deal with it...The customer pays for parts, labor is on the house.
  8. NickTransmissions

    No forward gears, but revers works after loud clunk at nearly WOT.

    Forward sprag or low roller one-way clutch. If you have no forward movement in manual low then low roller has failed (these dont go bad very often). If there's movement in manual low and 2, but not Drive then fwd sprag. Borg Warner makes both and a new one of each should have been installed.
  9. NickTransmissions

    2013 Yukon 2500 XL: Torque Converter, BU60FHD?

    Neither do I hence why I taught myself how to build transmissions. If I can do it, you certainly can...My 6L80 Info thread (link is in my sig) has all the info to help you get started. Let me know (or post in that thread) if you have any questions once you get started.
  10. NickTransmissions

    2013 Yukon 2500 XL: Torque Converter, BU60FHD?

    Q1: Look for local converter builders with good reviews - any TC you buy should have a thicker clutch than the .022" woven style clutch that comes in the factory JMBX converters Q2: Any Dex VI fluid will do; Maxlife is fine Q3: Zip kit is a great hydraulic correction kit; I install them in all...
  11. NickTransmissions

    GM 6L80 Transmission Information Thread

    Yes, give it about 10 complete drive cycles. Computer has to relearn your driving habits, etc and that takes some time...If it's still the same after 10 or so then call the trans builder back. Meanwhile check your fluid level when hot - make sure it's at the full mark on the dipstick...
  12. NickTransmissions

    GM 6L80 Transmission Information Thread

    Bumping this thread with a video on purchasing a used 6L80 or 6L90....While I generally don't recommend buying used automatics, many will take this approach due to budgetary and/or expediency reasons. So this video will give tips/pointers for how to weed out basket cases while giving important...
  13. NickTransmissions

    GM 6L80 Transmission Information Thread

    See if you can buy one from General Motors (either directly through the dealership or via GM Parts Direct / gmpartsdirect.com). Check the condition of the fluid (appearance and smell) - if appearance is red and smells normal (i.e. not burnt or nasty), I wouldn't bother...Dex6 is designed to...
  14. NickTransmissions

    1997 Tahoe 4wd model

    No upshift from first is usually caused by an interruption of the voltage signal from the vehicle speed sensor (yours is in the transfer case) and the pcm. First ensure it's plugged in. If it is, check the wires for damage/shorts. If the wire is fine, go to the junkard and find another OEM VSS...
  15. NickTransmissions

    Transmission slams into 1st SOLVED

    Yep, just a bit late, haha but glad OP worked it out :)
  16. NickTransmissions

    Transmission slams into 1st SOLVED

    Sounds like the stator (one-way clutch assembly) inside the converter was defective and slipping. Glad you were able to get it resolved under warranty.
  17. NickTransmissions

    07 Yukon transmission shifting issue

    Yep, I'm based in Vegas. Where are you located?
  18. NickTransmissions

    07 Yukon transmission shifting issue

    You should start a separate thread vs posting in someone else's so that you can get full attention on your issue vs competing with the OP. If you typing "Overdrive" is meant to convey placement of the shifter into Drive (i.e not Drive3) then I might check your filter to see if it's clogged...
  19. NickTransmissions

    Transmission output shaft seal/bearing

    I made the mistake of putting the drive shaft back on w/o indexing and it let me know immediately upon driving it...Happend twice, once on my Trans Am and once on my Chevy R10 pick up...Maybe GM started to 'neutral balance' those shafts in later years as these vehicles were 1996 and 1987...
  20. NickTransmissions

    Torque converter

    Have them take the pan off first to make sure the transmission doesnt also need an overhaul. If fluid looks good and nothing concerning in at the bottok then Id proceed with the converter upgrade. Othwrwise have the transmission overhauled as well - make sure everything that should be done is done.
  21. NickTransmissions

    Weird Sporadic Combined Errors - Stabilitrak, Collision Prep, P0700 P182B - SOLVED

    One of your codes is related to the internal mode switch (IMS). The IMS communicates range position to the PCM and also acts as a neutral safety switch. So first thing Id do is test the mode switch to confirm or deny it's actually bad. If so, replace with an OEM Gen Motors IMS from your local...
  22. NickTransmissions

    Transmission output shaft seal/bearing

    Thanks, @OR VietVet ... Hopefully it helps @diezelraccoon with the info he's looking for...
  23. NickTransmissions

    Transmission output shaft seal/bearing

    Here you go, man. Definitely watch this as I encountered a problem that I had to 'solve' on the spot and I was able to do it given my ample supply of spare parts...But I'm glad I filmed this because it shows you not only what the job entails but also something that, while not common at all by...
  24. NickTransmissions

    Transmission output shaft seal/bearing

    Why did you figure it was similar? If you were watching vids showing driveshaft removal from a T-case but you're working with a 2WD extension housing, why did you automatically assume they were the same? I'm asking because I can't emphasize enough to you and/or any other DYI'ers reading this how...
  25. NickTransmissions

    GM 6L80 Transmission Information Thread

    The AC system (specifically the compressor) places some marginal load on the engine as it's working so it's possible that's throwing off the tune, though not likely since tunes would account for that. Bear in mind, this is a guess on my part as I'm not a tuner and have no experience working with...

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