GMC 2009 Yukon XL Owner's Manual page 499

1. Put the tire (H) on the ground at the rear of the
vehicle with the valve stem pointed down, and to
the rear.
2. Tilt the tire toward the vehicle. Separate the
tire/wheel retainer (G) from the guide pin. Pull
the pin through the center of the wheel. Tilt
the retainer down through the center wheel opening.
Make sure the retainer is fully seated across the
underside of the wheel.
3. Assemble the two jack handle extensions (D) and
wheel wrench (E) as shown.
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