Removing The Spare Tire And Tools - GMC 2005 Sierra Denali Owner's Manual

When you have a flat tire, use the following example as a
guide to assist you in the placement of wheel blocks.
The following information will tell you next how to use
the jack and change a tire.

Removing the Spare Tire and Tools

The equipment you'll need is located under the
passenger's side second row seat. The spare tire is
located underneath the vehicle.
1. Pull up the second row seat with the loop at the
base of the seat cushion to access the tools.
2. Release the bottle jack from its holder by turning
the knob on the bottle jack counterclockwise to
lower the jack head slightly.
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