Chevrolet 2011 Volt Owner's Manual page 452

7. When the fascia has enough
clearance to clear the flatbed,
lower the flatbed, and finish
pulling the vehicle onto the
flatbed.
8. Secure the vehicle to the
flatbed (B) using nonabrasive
straps (A) through all four wheel
openings and secure the straps
to the flatbed (B).
If the vehicle is parked off the
shoulder of the road, at an angle
that it cannot be pulled onto a
flatbed, a hook/chain can be placed
into either of the front torque box
openings to pull the vehicle onto
a flat surface. Make sure that the
chains do not come in contact with
the rocker panel (A) or the front
fascia (B).
If you cannot access the front
torque box openings, wrap a tow
strap through one, or both of the
rear trailing arms (A) between the
bushing and torque tube, and pull
the vehicle onto a flat surface.
Do not wrap the tow strap around
the rear torque tube (B).