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May 24, 2013 Service bulletin

Power train: automatic transmission

Chevrolet technical service bulletin PIP3161F for 2007-2011 Chevrolet Silverado 1500, 2001-2013 Chevrolet Silverado 2500 and 2004-2013 GMC Sierra 2500 and others.

Bulletin number
PIP3161F
Component
Power train: automatic transmission
Summary
This Preliminary Information communication provides information to the technician about vehicles with a clunk type noise on start up with the vehicle in park when the vehicle is equipped Allison LCT1000 transmission. This condition is considered to be an operating characteristic of the Allison LCT1000 transmission.

Owners of these vehicles have filed 379 complaints in the transmission category.

Vehicles covered

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