GMC Yukon 2007 Owner's Manual page 547

8. Attach the jack handle, extension, and wheel
wrench to the jack and place it (with the
wheel blocks) under the vehicle toward the
front of the rear bumper.
9. Position the center lift point of the jack under
the center of the spare tire.
10. Turn the wheel wrench clockwise to raise the
jack until it lifts the end fitting.
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