G6 V6-3.9L (2009)
4. Remove the right side spark plug wires from the spark plugs, if required.
5. Remove the spark plugs.
Installation Procedure
Caution: It is important to check the gap of all new and reconditioned spark plugs before installation. Pre-set gaps may have changed during handling.
Use a round wire feeler gauge to be sure of an accurate check, particularly on used plugs. Installing plugs with the wrong gap can cause poor engine
performance and may even damage the engine.