Buick TSB #G-169470

2011 Buick LaCrosse

TSB Document:

Affected Component: POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL

Summary
12313 - Special Coverage. The chrome layer on the balance chain pins may wear, allowing the chain to stretch. This would cause an engine noise, and if left untreated, could cause the chain to break, leading to engine damage. In addition, the fuel pump plunger shaft seal may wear and allow fuel to leak into the crankcase, setting P0172 DTC, and illuminating the Malfunction Indicator Light. This can cause engine run-on and/or the engine to run rough. If this condition occurs within the stated terms, dealers will replace the engine balance chain and fuel pump.

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Date Published
JUL 16, 2013
NHTSA TSB #
10114182
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