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    '17 Yukon Denali - trans problem??

    Back in January, they replaced the valve body, and from the part number on the invoice, it looks like they filled it with Mobil 1 Synthetic ( 19417577 - MOBIL 1 SYNTHETIC LV ATF HP TRANSMISSION FLUID) don't know if this is the new fluid you're talking about. Nick
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    '17 Yukon Denali - trans problem??

    THanks. I'll give them a call Monday! Nick
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    '17 Yukon Denali - trans problem??

    At light power application. It seems to shift better during more aggressive acceleration. Thanks, Nick
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    '17 Yukon Denali - trans problem??

    I looked at the Blackbear web site, and it appears they don't have anything for 2017's.
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    '17 Yukon Denali - trans problem??

    Thanks GreyStone and SeaLandSky. It's not so bad that I want to trade it, or maybe it is. I'm sure we're all pretty picky about how our vehicles perform. It does drive me crazy. At least I'm on the record at the dealer about the problems. Thanks, Nick
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    '17 Yukon Denali - trans problem??

    The trans in my 6.2 Denali (with tow pkg, 2WD) has always seemed to have rough shifts. It is not a smooth application of power to the rear wheels. I've had it looked at by GMC 3 times. They've updated the software, replaced the valve body, and now say it shifts normally. I know the throttle...
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    Antenna-Looking....something??

    Interesting. I always wondered how they could address me by name when I pull into the service bay. Thanks, Nick
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    Antenna-Looking....something??

    Hi All, I'm new to the forum and hope someone can help. I just found this piece of "tape" sitting on the center console of my 2017 Yukon Denali. Looks like it fell from the inside rear view mirror, or in that area. Can anyone tell me where it needs to go and what it does? Thanks, Nick

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