GMC Sierra 2010 Owner's Manual page 539

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Extended Cab

A. Wing Nut Retaining Tool Kit

C. Wheel Blocks

E. Jack Knob

For regular cab models, the equipment you will need is

behind the passenger's seat. For extended and crew

cab models, the equipment is on the shelf behind the

passenger's side second row seat.

1. Turn the knob on the jack counterclockwise to

lower the jack head to release the jack from its

2. Remove the wheel blocks and the wheel block

retainer by turning the wing nut counterclockwise.

3. Remove the wing nut used to retain the storage

bag and tools by turning it counterclockwise.

You will use the jack handle extensions and the wheel

wrench to remove the underbody-mounted spare tire.

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