Cadillac 2011 CTS Coupe Owner's Manual page 426

7. Route the hook end of the strap
through the wheel.
8. Attach the hook to the cargo
tie-down in the rear of the
vehicle.
9. Slide the buckle to tighten the
cargo tie-down strap.
Use the following diagram as a
guide for storing the compact spare
tire in the trunk.
1. Return all tools as they were
stored in the rear storage
compartment and put the
compartment cover on.
2. Put the flat tire in the tire storage
bag, if there is one.
3. Place the tire, lying flat, in the
rear storage compartment.
4. Route one of the hooks (A), at
the end of the cable provided,
through the liftgate striker (B).
5. Slide both D-rings (E) on each
side of the vehicle as far
rearward as they will go.
6. Route one hook (A) under the
wheel spoke (C) and place the
hook into the slot in the cargo
rail on the driver side of the
vehicle.
7. Slide the D-ring (E) on that side
forward to engage the hook.
8. Route the other hook under the
wheel spoke (D) and place the
hook into the slot in the cargo
rail on the passenger side of the
vehicle.
9. Slide the D-ring (E) on that side
forward to engage the hook.