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Discussion Starter · #1 ·
GM just released a tsb for thermostat housing gasket leaks.


Coolant Leak at Thermostat Housing to Cylinder Head


2011-2012 Chevrolet Cruze

2012 Chevrolet Sonic

Equipped with Engine RPO LUW



Some customers may comment on a coolant leak.

The leak may be caused by the thermostat housing to cylinder head seal not being squarely aligned to the cylinder head.
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