GMC 2004 Canyon - Manual (Page 339)

Removing the Spare Tire and Tools The tools you will need are under the passenger’s seat.
For crew cab models, the jack and wheel blocks are
under the driver’s side rear seat. For regular and
extended cab vehicles the jack and wheel blocks are
located under the cover at the center of the vehicle
behind the front seats.
1. The vehicle will
have a cover if it
is an extended or
regular cab.
Crew Cab
Regular and
Extended Cab
5-75