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March 12, 2015 Service bulletin

14308A - special coverage (revised part information, service procedure and warranty transaction...

Chevrolet technical service bulletin 14308A for 2008 Chevrolet Silverado 3500 and 2008 GMC Sierra 3500.

Bulletin number
14308A
Component
Power train: automatic transmission
Summary
14308a - special coverage (revised part information, service procedure and warranty transaction information). Some vehicles equipped with a 6 speed automatic transmission (rpo mw7), may have a condition in which increased transmission oil cooling circuit pressure may cause transmission fluid to weep or leak. This loss of fluid occurs near the transmission cooler at the crimp joints on the metal ends of the cooler line where it joins the rubber hose. The increased oil cooling circuit pressure is experienced during vehicle operation at extreme low outdoor temperatures. Dealers are to inspect the transmission oil cooler lines and replace if leaking.

Owners of these vehicles have filed 1 complaints in the transmission category.

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