Pontiac 2003 Vibe - Manual (Page 230)

5-19
The following steps will tell you how to use the jack and
change a tire.
Removing the Spare Tire and Tools
The jack, wheel wrench, jack handle and spare tire are
stowed in the rear of the vehicle, underneath the floor of
the cargo area. To remove the spare tire and tools do the
following:
1. Turn the two lock knobs
on the floor of the cargo
area to UNLOCK.