From the GM service manual for 05 G6;
•Loosen both strut to knuckle nuts just enough to allow for movement.
•If the strut has not been modified previously, perform the following steps before continuing with the wheel alignment:
3.1. Disconnect the strut from the knuckle. Refer to Strut Assembly Replacement .
3.2. File the lower hole until the outer flange slot matches the inner flange slot.
3.3. Connect the strut to the knuckle. Refer to Strut Assembly Replacement .
•Adjust the camber to specification by moving the top of the wheel in or out. Refer to Wheel Alignment Specifications .
Notice: Refer to Fastener Notice in the Preface section.
•Install the strut to knuckle nuts.
Tighten the nuts to 120 N·m (89 lb ft).
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