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TSB Document:

Affected Component: EQUIPMENT

Summary
14745 - SPECIAL COVERAGE. CERTAIN 2010-2014 MODEL YEAR CHEVROLET EXPRESS AND GMC SAVANA MODEL VEHICLES, EQUIPPED WITH A 6.0L FLEXIBLE FUEL ENGINE (RPO L96) AND 6-SPEED AUTOMATIC TRANSMISSION (RPO MYD), MAY HAVE A CONDITION IN WHICH HIGH DUTY CYCLE USE WHILE PULLING TRAILERS AND/OR VEHICLES (SUCH AS FLEET CUSTOMERS DRIVING CUT-AWAY MODELS WITH 16 FOOT BOXES) CAN EXCEED THE TARGET ENERGY INPUT TO THE CLUTCH. THIS MAY LEAD TO FASTER TORQUE CONVERTER CLUTCH FRICTION MATERIAL WEAR THAN EXPECTED. SOME OPERATORS OF VEHICLES WITH THIS CONDITION HAVE REPORTED A DRIVELINE VIBRATION OR SHUDDER FEELING. IF THE CONDITION OCCURS WITHIN THE SPECIAL COVERAGE TERMS, DEALERS ARE TO REPLACE THE TORQUE CONVERTER AND REPROGRAM THE TRANSMISSION CONTROL MODULE (TCM).

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Date Published
JAN 27, 2015
NHTSA TSB #
10079541
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