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Old 09-30-2009, 09:24 AM
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WilliCO WilliCO is offline
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Location: Castle Pines, Colorado
Join Date: Oct 2007
Posts: 3,536
Mein Auto: 2016 Chevrolet Tahoe
Originally Posted by Hogie View Post
What are the RPMs that you are at when this happens?
For me, about 1500-1750 RPM, usually with very light throttle, moving at about 40 MPH.

Originally Posted by Hogie View Post
I am just wondering at that speed in auto mode ( assuming a Steptronic) if the car is searching for the next gear or previous gear, might be right on a threshold.
I had this thought as well, and I specifically suspected that the transmission was indecisive about the 5 to 6 shift. I have since noticed that the problem _does_ occur in DS mode, where the transmission holds 5th gear, so that theory has lost steam in my mind.

I think the problem may be with the throttle, and not the transmission. There is no discernable tachometer movement when it happens - it really just feels as if I lighten my foot on the pedal very slightly and then resume.
2016 Chevrolet Tahoe LT | 2013 535i xDrive M-Sport (Retired) | 2005 545i Sport (Retired - best of the litter) | 2001 X5 3.0 Sport (Retired)

Last edited by WilliCO; 10-01-2009 at 08:15 AM.
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