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  1. J

    GMC 2021 Yukon SD Card and Receptacle Replacement - $1400 an hour in labor?

    Video below of my "Ordeal". Maybe I'm in the minority, but $1400 an hour in labor and $42 for a screwdriver put a burr under my saddle. Disclaimer: I am a layman. I have no idea what I'm doing or what the right words are. If I have misspoke, called something by the wrong name, misspelled...
  2. J

    2021 Yukon Denali hard shift in Auto

    https://www.tahoeyukonforum.com/threads/2021-denali-vehicle-knock-stutters-surges-rough-acceleration-in-auto-mode-after-lifting-rods-replaced.139282/
  3. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Hi, I have driven it in 4HI, and again just yesterday after seeing your post. The same symptoms are not there in 4wd. Of course in 4wd there are other things going on tobe expected when in 4hi. But from a standing start, going straight, as the vehicle accelerates in 4hi it is smooth between...
  4. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Identical
  5. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Thank you all for your responses. I'd like to make one thing clear here to everyone. I am NOT talking about ANY NOISE. From a noise standpoint I can tell a difference between any of the settings. I am talking about feelings of stutter, surges, vibrations, rumbles, shakes, etc. They are...
  6. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Thank you very much for the detailed response. Note: I have 2 speed transfer case, 2WD, 4WD, Auto, 4 Lo. You've given me some great talking point and they are much appreciated. Its worth nothing a separate post was made 6 days ago with almost identical issues...
  7. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Thanks Pro. I appreciate the guidance. Note just 6 days ago a separate post was made with almost identical issues from. Cdip01 - https://www.tahoeyukonforum.com/threads/4wd-auto-problem.139109/ I got the message from the dealer yesterday saying they performed all the recal work and my car...
  8. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    I might be using the wrong words. But lifting and rods are both in this description. https://www.tsbsearch.com/Chevrolet/PIP5776C Maybe I should be saying "Bent or broken rod led to a collapsed lifter?"
  9. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    I'm 0 for 2 thus far on that. The frustrating part so far is each dealer, when I bring it in, had test driven it first with me so I can confirm they agree there is a problem. Each has agreed there is a problem until they go back to take a look at it and say they can't find anything wrong with...
  10. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Thanks for your reply ST. It does not have these same symptoms in 2WD. Of course you are correct that manually switching from 2WD based on conditions is optimal, a smarter man than me can have that conversation with my wife. Who just wants to set it and forget it just like her lovely...
  11. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Lifting rod(s) broke on August 8th. I got the vehicle back on August 22nd. This happened - https://www.tsbsearch.com/Chevrolet/PIP5776C - In my case a rod broke and the vehicle was not driveable. Specifically I was turning into a starbucks parking lot and BAM something happens and a loud...
  12. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Thanks for the reply Chad. Yes, I'm referring to the setting of AUTO versus 2wd or 4wH. I understand the point you are making with the manual, its the same point the dealer is telling me. But my point is there was never this issue in AUTO mode prior to them replacing the lifting rods. It...
  13. J

    4wd/ auto problem

    I just posted this. We have very similar issues. https://www.tahoeyukonforum.com/threads/2021-denali-vehicle-knock-stutters-surges-rough-acceleration-in-auto-mode-after-lifting-rods-replaced.139282/ My wife wants to run the car in Auto, hence that is the purpose of AUTO. The car will...
  14. J

    2021 Denali - Vehicle Knock, Stutters, Surges, Rough Acceleration - In Auto Mode, After Lifting Rods Replaced

    Hello, Apologies ahead of time for my first post being what it is. I'll try hard for brevity, but often my posts are long because I do not have time to make them short. I'm not a mechanic and can barely change al alternator on a 1993 K5 Blazer, I'll do the best I can. 2021 Yukon Denali...

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