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Buick LaCrosse 2005 - 2009 | 3.6 V6 Oxygen sensor replacement
- time 1 hour
- difficulty 3
Caution:
Because it is installed in the exhaust manifold or pipe, both of which contract when cool, an oxygen sensor might be very difficult to loosen when the engine is cold. Rather than risk damage to the sensor or its mounting threads, start and run the engine for a minute or two, then shut it off. Be careful not to burn yourself during the following procedure
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