CTS V6-2.8L (2006)
2.
Remove the compact spare tire cover wing nut (A) and Cover (B).
3.
Inspect the compact spare tire for size.
^
If the size is T145/70R17, then no replacement is necessary. Proceed to Step 6.
^
If the size is anything else, replace the compact spare tire. Proceed to Step 4.
4.
Remove:
4.1
Plastic wing nut (C)
4.2
Retainer (D)