Chevrolet 2009 Suburban Owner's Manual page 488

2. Remove the wing nut (B) used to retain the tool bag
by turning it counterclockwise.
3. Turn the knob (A) on the jack counterclockwise to
release the jack and wheel blocks from the bracket.
4. Remove the wheel blocks and the wheel block
retainer by turning the wing nut (C)
counterclockwise.
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The tools you will be using include the following:
A. Jack
B. Wheel Blocks
C. Jack Handle
D. Jack Handle
Extensions
E. Wheel Wrench