1. Hashiriya

    13 yukon Denali new owner drivetrain questions

    Hello, just a few question. 13 Yukon Denali 6.2 awd. What transmission are these equipped with? I’ve done some research and I want to say it’s a 6l80 but I could be wrong. Also. At 120k miles, I want to do a drain and refill of the trans fluid. Called the dealer when purchased and they had no...
  2. M

    OBS 4x4 Transmission interchange

    Howdy ya'll I have a built transmission in a 1999 2 door tahoe with a manual transfer case. I'm looking to buy a 1996 2 door that has the electronic transfer case. Can I swap my built transmission into the 96 with the electronic transfer case? My reason for swapping the transmissions is that the...
  3. H

    2022 Denali transmission

    Hi guys, long story short, 2022 Denali, 6.2, runs great, shifts fine, UNTILL I give it the juice. If I'm at lower speeds and hit it, the trans feels weird , like it's bumping or almost slipping, does it 80 percent of the time, normal city driving it seems fine, but when I punch it to get on the...
  4. D

    Dealer overfilled Trans Fluid

    Hey All, I have a 2013 LTZ with Max Trailering. Just had the trans flushed at 60k and the dealer charged me for 16 quarts which seemed like too much. They claimed that’s what it takes on the 6l80 but everything I can see is 10 for flush, 12.4 capacity but I did see one guy on a forum saying...
  5. M

    2015 Suburban-Periodic rear end rumble strip sensation at highways speeds, between 1k-2k rpm

    Same feeling when you drive over a "rumble strip" on the highway occurring at highway speeds. The sensation feels like it is coming from the rear of the vehicle, will last for a second or two along with a rpm drop of about 100-250. This will repeat rhythmically sometimes, and randomly at times...
  6. iboughtatahoe23

    Intermittent click form 2nd to 3rd gear

    starting to hear a click or like tap noise when shifting 2nd to 3rd? I can hear it when I’m driving with the windows down. Has anyone ever heard this.
  7. T

    6l80 flares, thunks cold upshifts

    I’ve read thru the 6l80 threads but haven’t seen anything exactly like what I’m seeing with my 2009 Yukon Denali XL. The truck has just under 164k miles. 1. When cold and under light throttle or if I have to lift throttle slightly just before a 1-2 or 2-3 up shift, the transmission will shift...
  8. W

    07 Tahoe/Broken torque converter = tranny rebuild?

    Hey guys, The other day I went to pull away form a set of lights in my '07 Tahoe and my engine just spun up....and we barely moved.... The tranny shop said that my torque converter question is, if my torque converter died, does that warrant a complete rebuild of my tranny...
  9. iboughtatahoe23

    Time to start saving up for rebuild or new transmission?

    2014 Tahoe LT 166k miles 6L80e transmission Idk how many threads I’ve made about my transmission… in February I bought 2014 Tahoe with 166k miles and was having weird and rough shifts after about a week or so, I took it back to dealership and they said transmission fluids were dirty (after...
  10. davidavidd

    4L60E No reverse - Wear gloves to handle this post

    Hi TYF members and friends! I appreciate all your opinions and replies to find the origin of this situation To make a long story short: My transmission was working fine until this week. I rebuilt it with your help two years and 65.000 miles ago when the pump went bad. I drove the Tahoe on a...
  11. Z

    PLEASE HELP - possible trans issue

    Hello everyone, Very new here and tried searching up this issue but couldn’t really find anything similar so my apologies if this has been covered already. I have a 2017 Suburban z71 5.3 6speed trans that just rolled over 80k. Literally OVERNIGHT (seriously not 1 single issue before) it...
  12. M

    2004 4l60e in a 2005 Yukon

    Hello, my 5.3L 2005 Yukon 4x4 has went out and I read online that it has a 4L60e in it. I looked online and found a 4L60e from a 2004 GMC envoy for a good price. Would a 2004 4L60e from a GMC envoy fit in my 2005 Yukon? I know its just a 1 year gap but I just want to make sure there aren't any...
  13. G

    2021 Tahoe Shifter Module and Transmission problem

    I have a 2021 Tahoe LT that we purchased July of last year. I don't the know build date but we basically bought it while In-Transit if that means anything time wise. Currently my Tahoe has been at the dealership since mid week before Thanksgiving. The problem I was having was the truck would...
  14. 7

    2003 Tahoe Z71 won't move in Drive or 3rd

    Hello, I have a 2003 Tahoe Z71 with a 4L60. Has 140k on the clock. Previous owner said the trans was rebuilt but I have an odd feeling he lied. Anyway, my wife was pulling out of dunkin donuts today and she said she heard a clunk when it tried to change from 1st to 2nd and the truck stopped...
  15. H

    Advice on best method to sell or part out 2000 Silverado

    I could really use some advice on the best method to sell or part out my 2000 Silverado WT, Reg cab, LWB, 2WD, 4.8L V8, manual windows, new automatic transmission, 3 piece cloth bench seat, vinyl floor. It has the wide diameter drive shaft that some has already offered $200 buck for. The hood...
  16. O

    Oil Leak on a 98 Yukon

    Hello! I have a 1998 GMC Yukon, which just had a oil pan gasket, and new oil cooler lines replaced. But yet, the drip still persists. After spending 15 mins under the truck, it looks like the pan has oil on it, but where the transmission and oil pan meet, I can see this drip. Now my first...
  17. J

    2017 Yukon making noise decelerating

    I recently had the torque converter replaced. The next day I started hearing this odd and frightful whizzing sound. Sound only occurs when I’m decelerating. It seems related to the transmission, but I have no idea. I’m going to take it back to the transmission shop, but curious if you guys...
  18. S

    Rusted Tranny Dipstick Tip (top)

    Hi, first time in the forum. I am currently looking for a 3rd gen tahoe, and got one at a decent price with only 115k on it. It's a 2009, 4wd 5.3. After test drive, most stuff are fine, shifts decently too, but under the hood the tranny dipstick plastic tip is missing and has a very very rusty...
  19. denalilex


    input on trans pan drop - complete fluid flush - filter, gasket & fluid change on high mileage vehicles ? (GMC YUKON DENALI 6.2L v8, 6L80) when i was checking my fluids yesterday - trans looked a little high… siphoned some out & it was like black tar. i know sometimes it’s advised against to...
  20. U

    ABS Sensor / Sluggish Transmission C0900 & C0899

    Hey everyone, did some searching but couldn't find exactly my issue. First, my 2010 Tahoe Flex RWD (185k) is overall running well. However, during a recent 500 mile road trip, shifting gears was mostly okay but seemed a bit sluggish at times almost like revs and gears aren't matching. Fluid is...
  21. A

    What Are Common Chevrolet SSR Transmission Problems?

    Intermittent harsh shifting Problem – A common Chevrolet SSR transmission problem is an intermittent hard 1-2 shift, often accompanied by engine bogging. This condition can be caused by the torque convertor clutch applying during the shift. Solution – To remedy the problem, the wiring harness...
  22. dS7R

    Kinda stuck in park? Once unplugged it’ll work?

    Good evening, So I have a 2013 Tahoe SSV with now about 129k miles. I’ve recently ran into a problem I thought would be an easy fix, but isn’t? I’m hoping I’m missing something you guys could help?! I’m currently kinda stuck in park, after hitting and playing with the brake a bunch I can get...
  23. JPVortex

    2005 Tahoe Transmission

    Hi, so I have a 2005 Tahoe 5.3L V8 4x4 with a bad transmission, and I found a very nice transmission on Marketplace, but just want to make sure it fits. So the used transmission in question was taken from a 2005 GMC Escalade 6.0L V8 4x4. The only thing I see that I'm not sure about is that the...
  24. C

    4 wheel Driveshaft Noise

    I have a 2006 Police Package Tahoe. I have been restoring it for the last 5 years. It is four wheel drive with all the traction control enhancements. I suddenly had some noise coming from underneath my truck when I was getting ready to drive out on the beach. It was a spinning like noise. When I...
  25. Mason Mayo

    On going electrical issues

    I have a 2008 Tahoe Ltz. I currently have hard shifting/lack of wanting to shift gears, lack of power, and several codes regarding a lack of communication with the transmission: (Photos of codes attached) Everytime I read data while it’s moving I get different readings left and right, rear...

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