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1000 miles from home dead 2022 Denali
I had a similar experience with my 2021 Yukon Denali XL. Bought in late March '21, was in a local shop in June and then broke down again (same issue, transmission stuff) in July after driving 11 hrs to our vacation location. Vehicle could not be moved so it was towed to a dealer where we were...- mannyp02
- Post #25
- Forum: Engine & Drivetrain
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M
Transmission/Shifting Won't work 2021 Yukon XL Denali
Yeah, to be honest I expected my build date to be earlier as I knew there had been problems with earlier builds; I sincerely hope your vehicle is problem free because GM's customer service is the absolute worst I have ever dealt with. To update everyone (and apologies for the long winded...- mannyp02
- Post #23
- Forum: Engine & Drivetrain
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Transmission/Shifting Won't work 2021 Yukon XL Denali
Yep, I saw the tire info and GVWR stickers but overlooked that one. It is 3/21.- mannyp02
- Post #21
- Forum: Engine & Drivetrain
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Transmission/Shifting Won't work 2021 Yukon XL Denali
Do you know where this is located? I looked on the driver side where the VIN and GVWR, etc is located but didn't see it.- mannyp02
- Post #19
- Forum: Engine & Drivetrain
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M
Transmission/Shifting Won't work 2021 Yukon XL Denali
To update everyone, my vehicle is still at the dealership in FL. They are replacing the TCM again (I've since verified that was what the first dealer replaced, not the ECM) and several other parts in the transmission system although I haven't gotten a list of those parts yet, I've only spoken to...- mannyp02
- Post #13
- Forum: Engine & Drivetrain
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M
Transmission/Shifting Won't work 2021 Yukon XL Denali
Annnddd......I spoke too soon. Just a few hours after posting my message saying it was fixed, I have now experienced the same issue. Major problem is we just took this vehicle on our vacation and are now 10 hrs from home. I was able to get it to go into gear in order to get it back to our rental...- mannyp02
- Post #11
- Forum: Engine & Drivetrain
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M
Transmission/Shifting Won't work 2021 Yukon XL Denali
Took a week and a half to get the ECM in but the dealership got it replaced on Friday. So far, so good, it has appeared to fix the issue. I've put quite a few miles on it since then with no repeat of the issue *knock on wood. While it is frustrating to have experienced this severe of an issue...- mannyp02
- Post #10
- Forum: Engine & Drivetrain
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M
Transmission/Shifting Won't work 2021 Yukon XL Denali
They finally told me last week that they believe the issue is the ECM (engine control module). It supposedly took several days to determine what it could be as they told me GM hadn't seen this particular issue before. They ordered the part but it has not yet come in so I do not know for sure if...- mannyp02
- Post #6
- Forum: Engine & Drivetrain
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M
Transmission/Shifting Won't work 2021 Yukon XL Denali
Took me an hour and a half this morning to get my Yukon to shift into gear. No clue what I did (if anything) to make it occur. I d/c the battery again but that didn't seem to work, it was about an hour after I reconnected it that it finally shifted. I had already called Roadside Assistance to...- mannyp02
- Post #4
- Forum: Engine & Drivetrain
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M
Transmission/Shifting Won't work 2021 Yukon XL Denali
I purchased my vehicle in late March and have had no issues until today (including a 5 hr, each way, trip to the beach). This afternoon on my way home, I had cut my vehicle off for just a minute and then started it back up. Upon starting, I received a text from the diagnostics alert system...- mannyp02
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- Replies: 26
- Forum: Engine & Drivetrain
