GMC 2012 Canyon Owner's Manual page 216

Use this position when
you start or idle the engine.
To back up, press the
clutch pedal. After the vehicle stops,
shift into R (Reverse). Slowly let up
on the clutch pedal as you press the
accelerator pedal. If it is hard to
shift, let the shift lever return to
Neutral and release the clutch
pedal. Then press the clutch again
and shift into R (Reverse). Do not
attempt to shift into 5 (Fifth) prior to
shifting into R (Reverse). The
transmission has a lock out feature
which prevents a 5 (Fifth) gear to
R (Reverse) gear shift.
Use R (Reverse), along with the
parking brake, for parking the
vehicle.
If you skip a gear when you
downshift, you could lose control
of the vehicle. You could injure
yourself or others. Do not shift
down more than one gear at a
time when you downshift.