Chevrolet 2011 Volt Owner's Manual page 454

The vehicle can be towed from
the front using a dolly. To tow the
vehicle using a dolly, follow these
steps:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer's instructions.
2. Drive the front wheels onto
the dolly.
3. Put the shift lever in P (Park).
4. Set the parking brake and
remove the key.
5. Clamp the steering wheel in a
straight-ahead position with a
clamping device designed for
towing.
6. Secure the vehicle to the dolly.
7. Release the parking brake.
8. Check for adequate rear fascia
to ground clearance.