Chevrolet Avalanche Owner's Manual page 322

Rear Towing (Rear Wheels Off the Ground)
Two-Wheel-Drive Vehicles
Use the following procedure to tow your vehicle from
the rear:
1. Drive the vehicle onto the dolly.
2. Firmly set the parking brake. See Parking
Brake on page 2-38 for more information.
3. Put the transmission in PARK (P).
4. Follow the dolly manufacturer's instructions to
attach and secure the vehicle being towed to
the dolly and then the loaded dolly to the tow
vehicle.
Make sure the wheels are straight before
proceeding to the next steps.
5. Release the parking brake only after the vehicle
being towed is firmly attached to the tow vehicle.
6. Turn the ignition off and lock the steering column.
If the tow vehicle will not be started or driven for six
weeks or more, remove the battery cable from
the negative terminal (post) of the battery to prevent
your battery from draining while towing.
4-62
Four-Wheel-Drive Vehicles
Use the following procedure to tow your vehicle from
the rear:
1. Drive the vehicle onto the dolly.
2. Put the transmission in PARK (P).
3. Turn the engine off, but leave the ignition on.
4. Firmly set the parking brake.
5. Follow the dolly manufacturer's instructions to
attach and secure the vehicle being towed to
the dolly and then the loaded dolly to the tow
vehicle.
Make sure the wheels are straight before
proceeding to the next steps.
CAUTION:
{
Shifting the transfer case to NEUTRAL can
cause your vehicle to roll even if the
transmission is in PARK (P). You or someone
else could be seriously injured. Be sure to set
the parking brake before placing the transfer
case in NEUTRAL. See Parking Brake on
page 2-38.