GMC 2007 Canyon - Manual (Page 61)

For regular and extended cab models without
rear seats, there is a top tether anchor located
behind a removable cover on the back wall behind
the right front passenger seat. You may have to
pull the seatback forward to access the anchor.
Do not secure a child restraint in the right front
passenger’s position of a vehicle that has rear seats
if a national or local law requires that the top tether
be attached, or if the instructions that come with the
child restraint say that the top tether must be
attached. There is no place to attach the top tether
in this position.
Accident statistics show that children are safer if
they are restrained in the rear rather than the front
seat. See Where to Put the Restraint on page 53
for additional information.
Regular and Extended Cab without Rear Seats
61