Infamous transmission "thunk" after SW upgrade

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Infamous transmission "thunk" after SW upgrade

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06-12-2009, 11:47 PM

admranger

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Join Date: Mar 2009

Location: Las Vegas

Posts: 1,636

Infamous transmission "thunk" after SW upgrade

Ok, so I did the transmission software upgrade and the "thunk", that nasty 'did I just get hit?' feeling you get when you have the 2-1 downshift (California stop syndrome is what I call it) is still there.

What's the next step for resolution of this fun issue? My X5 is CPO (and the software fix was done under CPO a few weeks ago) so I'm just wondering if anyone has had any luck getting this resolved.

What's sad is that the Allison transmission in my pickup truck is smoother and more responsive than the X5's tranny.

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Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual

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