2018 Yukon XL Denali Transmission Maint Question.
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Also, on the BAT Auto Technical Forum, I had a fellow respond in this way, referring perhaps to a possible ground fault sutuation: ok at my shop i have seen this problem ok i would change the fluid if this is a 8 speed use mobil 1 LV HP also and a bottle of Motorcraft XL-3 trust me it work's great on the shudder problem also a new filter now onto the can bus line issue on the driver side down by the frame you should see a big connector just below the manifold check there for a issue unplug and clean good and drive it again see what happend -
We (and Claude) NEED all the codes to help steer this. If the service manager won't budge and give you a detailed diagnostics with all DTCs, we and Claude are sitting duck. If the SM won't budge, call GM customer service and get them to provide you that info from the dealer. -
I typed up my experience - what happened with my truck - and loaded it into CLAUDE AI. I've attached that dialogue here. I don't for a second think that AI is a match for experience and diagnostics, but this response is based on a lot of experience that's made its way onto the web. What do you all think? Is this a good way to think about this problem? Claude AI on My 2019 chevrolet colorado transmission problem.pdf
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Talk to the service manager. Have him give you a copy of the back of the repair order with the diagnostics and all and any DTCs found.
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Those headrest speakers look fun! Standard panoramic roof on the AT4X might be a deal breaker for me unless I can delete it. Maybe I should just supercharge my truck and call it a day. We'll see what I think of all the new trucks when I see them in person.
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