TSB Document:

Affected Component: ENGINE (PWS)

Summary
This Preliminary Information communication provides information to the technician about vehicles that may have a vibration that is only present in second and third gears when lugging the engine, example going uphill or causing engine rpm to be pulled down from being in to high of gear. If the concern is only present in second and/or third gears then contact General Motors Technical Assistance Center for further assistance.

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Date Published
JUN 14, 2013
NHTSA TSB #
10113048
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