Cadillac 2005 STS - Manual (Page 365)

Removing the Flat Tire and
Installing the Spare Tire
If your vehicle has wheel covers, use the flat end of the
wheel wrench to remove the covers. Turn the wheel
wrench clockwise to gently pry off the wheel cover.
Be careful not to scratch the aluminum wheel edge and
don’t try to remove the wheel cover with your hands.
If your vehicle has wheel nut caps, turn the wheel
wrench counterclockwise to remove the caps.
Once the wheel cover and wheel nut caps have been
removed, use the following steps to remove the flat tire
and install the spare tire.
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