Buick TSB #PIP3535C
2011 Buick LaCrosse
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- This Preliminary Information communication informs dealer technicians of a potential whining noise that can occur after servicing the water pump, water pump chain or cylinder head without use of the water pump sprocket holding tool. Dealers are advised this condition is the result of a water pump chain tensioner ratcheting out. The dealer is directed to follow service information to reset the water pump chain tensioner to correct.
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