Chevrolet 2005 Cobalt Owner's Manual page 291

Uplevel Model
3. Remove the wing nut that retains the jack and the
spare tire.
4. Remove the spare tire by placing your hands at the
four and eight o'clock positions. Gently pull it up
and out of the trunk.
The tools you'll be using include the jack (A) and wheel
wrench (B).
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