Cadillac SRX Owner's Manual page 364

5. Turn the wheel wrench clockwise to raise the jack
until it lifts the secondary latch spring.
6. Keep raising the jack until the spare tire stops
moving upward and is held firmly in place, this lets
you know that the secondary latch has released.
7. Lower the jack by turning the wheel wrench
counterclockwise. Keep lowering the jack until
the spare tire is resting on the wheel wrench.
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8. Grasp the spare tire with both hands and pull it out
from under the vehicle.
9. Reach under the vehicle and remove the wheel
wrench and jack.