GMC Terrain 2010 Owner's Manual page 344

9-70 Vehicle Care
4. Turn the wheel wrench
counterclockwise to loosen all
the wheel nuts, but do not
remove them yet.
5. Place the jack near the flat tire.
Notice: Make sure that the jack
lift head is in the correct position
or you may damage your vehicle.
The repairs would not be covered
by your warranty.
Front
Rear
6. Position the jack lift head at the
jack location nearest the flat tire.
The location is indicated by a
mark on the bottom edge of the
front and rear door plastic
molding. The jack must not be
used in any other position.