July 1, 2009 Service bulletin

Saturn/gmc/chevrolet/buick: hesitation when accelerating during a right hand turn around 15MPH;...

GMC technical service bulletin PIP-4668 for 2009 GMC Acadia, 2009 Chevrolet Traverse and 2009 Buick Enclave and others.

Bulletin number: PIP-4668
Component: Power train: manual transmission
Summary: Saturn/gmc/chevrolet/buick: hesitation when accelerating during a right hand turn around 15mph; hesitation/delay/harsh shift around 40mph during 5-3-2 shift. This was improved for feel, but also for being too available; also relates to lower and higher speeds too; low speed hesitation during a 2-3 shift on light accel after launch; cruise control busyness around 50mph and/or poor shift feel; delayed up shift after a forced throttle downshift after returning to normal throttle; nonlinear decel feel and/or tachometer swing on 5-4 coast down shift as a result of entering and exiting decel fuel cut off (dfco).

Owners of these vehicles have filed 182 complaints in the transmission category.

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