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Old 09-29-2009, 05:37 PM
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WilliCO WilliCO is offline
1oz perception-1# obscure
Location: Castle Pines, Colorado
Join Date: Oct 2007
Posts: 3,536
Mein Auto: 2016 Chevrolet Tahoe
Mine does it too, precisely as you describe. I took it to the dealer about a year ago - they claimed that that valves had carbon buildup. I paid $200 to have them cleaned, and the car exhibited the same behavior on the way home from the dealer, that same day. So avoid that diagnosis.

I think I notice that it stops happening if I reset the transmission programming with the 60 seconds on the foot pedal trick, but if so, it always returns. I'm not sure it's a showstopper problem, as long as it's not causing additional harm - but I wish it wouldn't do it.

Please post back here (or, better yet, PM me) if you determine what this issue is.
2016 Chevrolet Tahoe LT | 2013 535i xDrive M-Sport (Retired) | 2005 545i Sport (Retired - best of the litter) | 2001 X5 3.0 Sport (Retired)
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