GMC 2004 Canyon - Manual (Page 350)

Storing a Flat or Spare Tire,
Jack and Tools
{ CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone.
Store all these in the proper place.
Notice: Storing an aluminum wheel with a flat tire
under your vehicle for an extended period of time or
with the valve stem pointing up may damage the
wheel. Always stow the wheel with the valve
stem pointing down and have the wheel/tire repaired
as soon as possible.
Store the tire under the rear of the vehicle in the spare tire
carrier. Use the art and text following to help you.
1. Put the tire on the ground at the rear of the vehicle
with the valve stem pointed down.
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