Pontiac 2003 Montana Owner's Manual page 394

Secondary Latch System
Your vehicle may have an underbody mounted tire hoist
assembly equipped with a secondary latch system.
It's designed to stop a tire from suddenly falling off your
vehicle if the cable holding the spare tire is damaged.
For the secondary latch to work, the tire must be stowed
with the valve stem pointing down.
Front-wheel-drive vehicles use the underbody tire hoist
assembly to store either the compact spare or a flat
road tire. See "Storing a Flat or Spare Tire and Tools" in
the Index for instructions on storing the spare or flat
tire correctly.
If your vehicle is equipped with all-wheel-drive, the
underbody tire hoist assembly stores only the compact
spare tire. See "Storing the Spare Tire and Tools"
later in this section for instructions. To store a flat
full-size tire correctly, see "Storing the Flat Tire on an
All-Wheel-Drive Vehicle" later in this section.
Before beginning this procedure read
8 1 1
ihe
instructions. Failure to read and follow the
instructions could damage the hoist assembly
and you and others could get hurt. Read and
follow the instructions listed below.
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