Pontiac Vibe 2003 Owner's Manual page 107

Cargo Tie Downs
The tire tie-down belts are designed to secure the flat
tire. You can also use the belts and hooks to secure
your luggage.
There are eight tie-down hooks located in the rear of
the vehicle. The belts are located under the cargo area
floor panel. To use the belts, hook the ends to the
lower tie-down hooks in a criss-cross pattern across the
cargo. Pull on the belts at the buckle to tighten the
belt as needed.
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