Chevrolet 2005 Colorado Owner's Manual page 254

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 towing.
For manual transmission vehicles, make sure the
wheels are straight before proceeding to the
next steps. On automatic transmission vehicles, use
an adequate clamping device to ensure that the
front wheels are locked into the straight position.
5. Release the parking brake only after the vehicle
being towed is firmly attached to the tow vehicle.
6. Turn the ignition to LOCK.
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.
4-54
Four-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 2-29 for more information.
3. Put an automatic transmission in PARK (P) or a
manual transmission in FIRST (1).