Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Date Published
NOV 14, 2012
NHTSA TSB #
10112568
TSB Document
Summary
This Preliminary Information communication provides information to the technician about vehicles that have a vibration that is only present in fourth gear when lugging the engine. Technician will need to contact General Motors Technical Assistance Center if the vibration is fourth gear only verify correct shift system adjustment and if no change.